Mathematics
Grade 7
15 min
Find the slope from two points
Find the slope from two points
Tutorial Preview
1
Introduction & Learning Objectives
Learning Objectives
Identify the coordinates of two given points on a coordinate plane.
Define 'rise' as the vertical change and 'run' as the horizontal change between two points.
Calculate the 'rise' and 'run' by subtracting the y-coordinates and x-coordinates, respectively.
Apply the slope formula, $m = \frac{\text{rise}}{\text{run}}$, to find the slope of a line.
Determine the slope of a line given any two points.
Interpret the meaning of positive, negative, zero, and undefined slopes.
Ever wondered how steep a ramp is or how fast a roller coaster climbs? 🎢 Mathematics helps us measure steepness using something called 'slope'!
In this lesson, you'll learn how to calculate the steepness, or slope, of a straight line...
2
Key Concepts & Vocabulary
TermDefinitionExample
Coordinate PlaneA grid formed by two perpendicular number lines (x-axis and y-axis) used to locate points.Imagine a city map where streets run east-west (x-axis) and north-south (y-axis).
Ordered PairA pair of numbers (x, y) that gives the exact location of a point on the coordinate plane.The point (3, 5) means you go 3 units right and 5 units up from the origin.
SlopeA measure of the steepness and direction of a line, often described as 'rise over run'.A very steep hill has a large slope, while a flat road has a slope of zero.
RiseThe vertical change (up or down) between two points on a line. It's the difference in the y-coordinates.If you move from (2,3) to (2,7), the rise is 7 - 3 = 4.
RunThe horizontal change (left or right) between two points on a...
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Core Formulas
Slope as Rise over Run
$m = \frac{\text{rise}}{\text{run}}$
This formula defines slope ($m$) as the ratio of the vertical change (rise) to the horizontal change (run) between any two points on a line.
Slope Formula from Two Points
$m = \frac{y_2 - y_1}{x_2 - x_1}$
Given two points $(x_1, y_1)$ and $(x_2, y_2)$, this formula calculates the slope by finding the difference in the y-coordinates (rise) and dividing it by the difference in the x-coordinates (run). Remember to subtract in the same order for both x and y!
5 more steps in this tutorial
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Easy
In the context of finding the slope of a line, what does the term 'rise' represent?
A.The horizontal change between two points
B.The vertical change between two points
C.The distance from the origin
D.The steepness of the line
Easy
Which of the following formulas correctly calculates the slope (m) of a line passing through two points, (x₁, y₁) and (x₂, y₂)?
A.m = (x₂ - x₁) / (y₂ - y₁)
B.m = (y₂ - y₁) / (x₂ - x₁)
C.m = (y₂ + y₁) / (x₂ + x₁)
D.m = (x₁ - y₁) / (x₂ - y₂)
Easy
A line has a positive slope. If you trace the line from left to right on a graph, what direction will it go?
A.Upward
B.Downward
C.Horizontally
D.Vertically
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