Name: finding distance on a coordinate plane
Uploaded: 2025-11-26T05:44:23.000Z
Duration: 1 min 20 s
Channel: JoVE

Two friends enter a park from different entrances and stop at different corners of a field.From their respective positions, they want to determine the exact distance between them.The distance formula is applied to calculate the distance between the two positions, marked as points A and B, using their coordinates.It finds the shortest path between them&#8212;like cutting diagonally across a field instead of walking around the edges.This calculation is based on the Pythagorean Theorem, where the horizontal and vertical distances meet at Point C, forming a right triangle.The theorem states that the square of the hypotenuse, or the diagonal side, equals the sum of the squares of the other two sides.On a coordinate grid, these sides represent the differences in the x- and y-values between points A and B.By squaring the horizontal and vertical differences, adding them together, and taking the square root, the length of the hypotenuse is determined.This relationship gives the straight-line distance between the two friends.Such calculations are also used in mapping routes and planning wireless network coverage.

the distance formula

In geometry, measuring the direct distance between two points on a plane is essential in various practical and theoretical applications. Whether in navigation, engineering, or computer graphics, determining the shortest path between two locations involves using the distance formula. This formula is derived from the Pythagorean Theorem, which relates the lengths of the sides of a right triangle. On a coordinate plane, the horizontal and vertical distances between two points serve as the legs of a right triangle, and the line connecting the points forms the hypotenuse. By calculating the square root of the sum of the squares of these horizontal and vertical differences, the straight-line distance can be accurately determined.A city planner is mapping two key locations in a town: a library at L (300, 500) and a sports complex at S (1000, 1200). To determine how far these locations are apart, the distance formula is used:<figure class='image image-style-align-center image_resized' style='display:table;margin-left:auto;margin-right:auto;width:55.07%;'><img style='aspect-ratio:1920/250;' src='https://cloudfront.jove.com/files/ftp_upload/40039/40039_Equation_1_1__editor_40039.svg' alt='40039_Equation_1_1_.svg' /></figure>Substituting the given coordinates:&#160;<figure class='image image-style-align-center image_resized' style='display:table;margin-left:auto;margin-right:auto;width:50.36%;'><img style='aspect-ratio:1920/250;' src='https://cloudfront.jove.com/files/ftp_upload/40039/40039_Equation_2_1__editor_40039.svg' alt='40039_Equation_2_1_.svg' /></figure>Thus, the library and the sports complex are approximately 990 meters apart.This method illustrates how geometric principles are practically applied in urban planning, allowing for accurate distance measurement essential for designing efficient layouts and infrastructure.

The Distance Formula

In geometry, measuring the direct distance between two points on a plane is essential in various practical and theoretical applications. Whether in ...

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Math Fundamentals

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Coordinates and Graphs

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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.

To find the distance, square the horizontal change and the vertical change, add those values, and take the square root. This gives the straight-line distance between the two points. The method is used in navigation, engineering, and computer graphics, where accurate distance matters.

A city planner example shows how the formula works in real life. A library is located at L (300, 500), and a sports complex is at S (1000, 1200). Using the distance formula, the two locations are about 990 meters apart. This kind of calculation helps planners design efficient layouts and infrastructure.

Finding Distance on a Coordinate Plane

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...

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

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 the distance formula uses the Pythagorean Theorem to measure straight-line distance between two points on a coordinate plane, with a city planning example.

Finding Distance on a Coordinate Plane | 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

Finding Distance on a Coordinate Plane

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