Grade 8 Math · Expressions & Equations
Understand y = mx + b
Write a linear equation with the given slope and y-intercept.
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What you’ll learn
Write a linear equation with the given slope and y-intercept.
Key idea
m is slope and b is the y-intercept.
Worked example
Write a linear equation with the given slope and y-intercept.
m = 3, b = 2
- y = 3x + 2
Answer: y = 3x + 2
Quick Check
Analyze the proposed student response. Choose Correct or Incorrect.
x/y table
Student response: y = -2x - 6
Given values| x | y |
|---|
| -2 | -2 |
| 0 | -6 |
| 2 | -10 |
| 4 | -14 |