Name: plotting two-variable equations with tables
Uploaded: 2025-11-26T05:44:21.000Z
Duration: 1 min 30 s
Channel: JoVE

İki değişkenli bir denklem, x ve y arasında bir ilişki gösterir. Denklemin çözümleri, denklemi sağlayan sıralı değer çiftleridir, (x, y).Bu çözümler, karşılık gelen noktaların bir grafik üzerinde çizilmesiyle görsel olarak temsil edilebilir.Grafik oluşturma işlemi, x için birkaç değer seçerek ve y'nin karşılık gelen değerlerini hesaplamak için bunları denklemde yerine koyarak başlar.Kesişimler, grafiğin eksenleri nerede kestiğini tanımlar. x-kesişim noktası, y'yi sıfıra ayarlayarak bulunur ve y-kesişim noktası, x'i sıfıra ayarlayarak bulunur.Bu noktalar daha sonra çizilen diğer noktalarla birlikte grafiğe eklenir.Ortaya çıkan her sıralı çift kaydedilir ve bir grafik üzerinde çizilir. Noktalar daha sonra denkleme bağlı olarak düz bir çizgi veya eğri olarak görünebilen görsel bir deseni ortaya çıkarmak için birleştirilir.Bu grafik oluşturma yöntemi, sinema bileti satışlarını birkaç gün boyunca takip etmek gibi gerçek dünya bağlamlarında faydalıdır.Grafik, günlük bilet satışlarını x'in gün numarası ve y'nin toplam satış olduğu noktalar olarak çizerek satışların zaman içinde nasıl değiştiğini gösterir. Bu görsel model, geçmiş verilere dayanarak değerleri karşılaştırmaya, eğilimleri tespit etmeye ve gelecekteki satışları tahmin etmeye yardımcı olur.

İki değişkenli denklemlerin grafikleri

Genellikle y = f(x) ya da Ax + By = C bi&#231;iminde yaz&#305;lan iki de&#287;i&#351;kenli bir denklem, x ve y ile temsil edilen nicelikler aras&#305;ndaki ili&#351;kiyi tan&#305;mlar. B&#246;yle bir denklemin her &#231;&#246;z&#252;m&#252;, denkleme yerle&#351;tirildi&#287;inde onu sa&#287;layan s&#305;ral&#305; ikili (x, y)dir. Bu &#231;iftler, de&#287;i&#351;kenler aras&#305;ndaki ili&#351;kiyi g&#246;rsel olarak kavramak i&#231;in grafik &#252;zerinde g&#246;sterilebilir.
&#304;ki de&#287;i&#351;kenli bir denklemin grafi&#287;ini olu&#351;turmak i&#231;in yayg&#305;n bir y&#246;ntem de&#287;er tablosu haz&#305;rlamakt&#305;r. &#214;nce ba&#287;&#305;ms&#305;z de&#287;i&#351;ken x i&#231;in birka&#231; de&#287;er se&#231;ilir. Her de&#287;er denkleme yerle&#351;tirilerek kar&#351;&#305;l&#305;k gelen y de&#287;eri hesaplan&#305;r. Elde edilen (x, y) &#231;iftleri Kartezyen koordinat d&#252;zlemi &#252;zerindeki noktalard&#305;r. Bu noktalar &#231;izilip birle&#351;tirildi&#287;inde ili&#351;kinin do&#287;rusal, ikinci dereceden veya ba&#351;ka t&#252;rde olup olmad&#305;&#287;&#305; ortaya &#231;&#305;kar.
&#214;rne&#287;in, y = 2x + 1 do&#287;rusal denklemi, x i&#231;in &#231;e&#351;itli de&#287;erler se&#231;ilip kar&#351;&#305;l&#305;k gelen y de&#287;erleri hesapland&#305;&#287;&#305;nda bir do&#287;ru elde edilir. &#214;rnek olarak:
<ul>
<li>x = -1 ise, y = 2(-1) + 1 = -1</li>
<li>x = 0 ise, y = 1</li>
<li>x = 2 ise, y = 5</li>
</ul>
Bu noktalar (-1, -1), (0, 1) ve (2, 5) grafikte g&#246;sterilip birle&#351;tirildi&#287;inde, denklemin t&#252;m &#231;&#246;z&#252;mlerini temsil eden bir do&#287;ru elde edilir.
Kesi&#351;im noktalar&#305;, grafi&#287;in davran&#305;&#351;&#305;n&#305; anlamak i&#231;in kritik ba&#351;vuru noktalar&#305;d&#305;r. x-kesi&#351;imi, y = 0 yaz&#305;l&#305;p x i&#231;in &#231;&#246;z&#252;ld&#252;&#287;&#252;nde; y-kesi&#351;imi ise x = 0 yaz&#305;l&#305;p y i&#231;in &#231;&#246;z&#252;ld&#252;&#287;&#252;nde bulunur. Bu noktalar, grafi&#287;in x ve y eksenlerini nerede kesti&#287;ini g&#246;sterir. y = 2x + 1 denklemi i&#231;in x = 0 yaz&#305;ld&#305;&#287;&#305;nda y-kesi&#351;imi (0, 1), y = 0 yaz&#305;ld&#305;&#287;&#305;nda ise x-kesi&#351;imi (-0,5, 0) elde edilir.

İki Değişkenli Denklemlerin Grafikleri

Genellikle y = f(x) ya da Ax + By = C bi&#231;iminde yaz&#305;lan iki de&#287;i&#351;kenli bir denklem, x ve y ile temsil edilen nicelikler ...

Education

JoVE Core

Math Fundamentals

Matematik Temelleri

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Birim

Coordinates and Graphs

Koordinatlar ve Grafikler

KEY TERMS AND CONCEPTS

TEMEL TERİMLER VE KAVRAMLAR

Graphs of Equations in Two Variables

plotting two-variable equations with tables

Plotting two-variable equations with tables helps show how x and y are related. An equation written as y = f(x) or Ax + By = C gives ordered pairs that satisfy the rule. Each pair can be checked by substituting the x and y values into the equation.

A value table is a common way to build the graph. Start by choosing several values for the independent variable x. Then substitute each x value into the equation to find the matching y value. The results become ordered pairs on the Cartesian coordinate plane.

After the points are plotted, connect them to see the shape of the relationship. Some equations make a straight line, while others may form a quadratic or another curve. For example, the linear equation y = 2x + 1 gives points such as (-1, -1), (0, 1), and (2, 5).

Intercepts help identify where the graph crosses the axes. The x-intercept is found by setting y = 0 and solving for x. The y-intercept is found by setting x = 0 and solving for y. For y = 2x + 1, the y-intercept is (0, 1) and the x-intercept is (-0.5, 0).

Plotting Two-Variable Equations with Tables

plotting-two-variable-equations-with-tables

coordinate plane

Finding Points on the Coordinate Plane

The Cartesian coordinate plane is used to find and plot points in two dimensions. It is made of two number lines that cross at right angles. The horizontal line is the x-axis, and the vertical line is the y-axis. Their meeting point is the origin, where both values are zero. The axes divide the plane into four quadrants. These quadrants are labeled in a counterclockwise direction, starting from the upper right. Every point on the plane is written as an ordered pair. The first number is the...

the distance formula

Finding Distance on a Coordinate Plane

Finding distance on a coordinate plane uses the distance formula and the Pythagorean Theorem. In geometry, this method helps measure the direct distance between two points on a flat plane. It is useful in many practical and theoretical settings. The formula comes from a right triangle. On a coordinate plane, the horizontal and vertical differences between two points become the legs of that triangle. The line connecting the points is the hypotenuse, and that is the shortest path between them. <br...

the midpoint formula

Finding the Center of a Line Segment

Finding the center of a line segment is a key idea in coordinate geometry. The midpoint is the point that lies exactly halfway between two points on a coordinate plane. It is used in mathematics, physics, engineering, and planning work where a central location matters. To work with a midpoint, start with two points, A(x1, y1) and B(x2, y2). A straight line segment can be drawn between them on the coordinate plane. The midpoint, labeled M, divides that segment into two equal parts. The...

graphs of equations in two variables

Plotting two-variable equations with tables helps show how x and y are related. An equation written as y = f(x) or Ax + By = C gives ordered pairs that satisfy the rule. Each pair can be checked by substituting the x and y values into the equation. A value table is a common way to build the graph. Start by choosing several values for the independent variable x. Then substitute each x value into the equation to find the matching y value. The results become ordered pairs on the Cartesian...

circles

Circle Equations in Standard Form

Circle equations in the coordinate plane use a center and a radius to describe every point on the curve. A circle is the set of all points that stay the same distance from a fixed point called the center. That constant distance is the radius. The distance formula connects a point x, y on the circle to the center h, k. The distance between those two points equals the radius r. When both sides of the distance formula are squared, the equation of the circle can be written in standard form. <br...

symmetry

Ellipse Symmetry at the Origin

An ellipse centered at the origin shows clear symmetry in its graph. Its equation describes a smooth, closed curve whose distance from the center keeps a constant ratio between the horizontal and vertical axes. Because the ellipse stretches farther along the x-axis than the y-axis, it has a horizontal shape. This ellipse has symmetry across the x-axis. That means the top half and bottom half are mirror images across the horizontal axis. Algebraically, the equation stays the same when y is...

solving equations graphically

Graphing Equations to Find Intercepts

Graphing equations helps students find intercepts and solutions on the coordinate plane. It gives a visual way to solve equations and understand how a function behaves. To use this method, write the equation in the form y = f(x). The solution to the original equation is the x-value where the graph crosses the x-axis. At that point, f(x) = 0. For example, the linear equation 2x - 4 = 0 can be written as y = 2x - 4. When this function is graphed, it has one x-intercept at x = 2, and that is the...

solving inequalities graphically

Graphing Inequality Solution Ranges

Graphing inequality solution ranges gives a visual way to find the x-values that make an inequality true. Students look at where a graph sits compared with the x-axis or with another graph. This shows the interval where the condition is satisfied. For a quadratic inequality, the first step is to plot the related function. For example, with x² − 4x + 2 &lt; 0, graph y = x² − 4x + 2. The solution is the set of x-values where the curve lies below the x-axis. Inequalities can also compare two...

key terms and concepts

Learn how to graph equations in two variables using value tables, ordered pairs, and intercepts for clear high school math practice.

Plotting Two-Variable Equations with Tables | JoVE K12

The JoVE Math Fundamentals collection is designed to build a deep and comprehensive understanding of essential mathematics. Covering the foundations of algebra, geometry, trigonometry, and analytic reasoning, this course establishes a strong base for future studies. The collection connects core mathematical concepts with real-world practice, equipping learners to solve complex problems, master problem-solving skills, and apply abstract ideas.

math fundamentals

Plotting Two-Variable Equations with Tables

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