8th Grade Slope and Linear Equations Worksheet — Level 3 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 8th Grade linear relationships & graphs worksheet.
Success TutoringWorksheetsAnswer sheet8th Grade · Mathematics · Linear Relationships & Graphs8th Grade Slope and Linear Equations Worksheet — Level 3 — Practice Set 4 — Answers
Show your work. Slope = rise ÷ run; the equation of a line can be written as y = (slope)x + (y-intercept).
- AYes
- BNo
Answer: No
Substitute x = −5: y = 3 × (−5) + 1 = −14, not −13.
Answer: slope 1; y-intercept 8
In y = (slope)x + (y-intercept), the number multiplying x is the slope and the constant is where the line crosses the y-axis.
- AYes
- BNo
Answer: No
Substitute x = −5: y = −5 × (−5) − 5 = 20, not 18.
Answer: y = −3x + 7
- y = −3x + (y-intercept)
- 7 = −3 × 0 + (y-intercept)
- y-intercept = 7 − 0 = 7
- y = −3x + 7
Answer: y = 4x − 7
- y = 4x + (y-intercept)
- −11 = 4 × (−1) + (y-intercept)
- y-intercept = −11 − (−4) = −7
- y = 4x − 7
Answer: slope 5; y-intercept 1
In y = (slope)x + (y-intercept), the number multiplying x is the slope and the constant is where the line crosses the y-axis.
Answer: slope −3; y-intercept 9
In y = (slope)x + (y-intercept), the number multiplying x is the slope and the constant is where the line crosses the y-axis.
Answer: slope −6; y-intercept 6
In y = (slope)x + (y-intercept), the number multiplying x is the slope and the constant is where the line crosses the y-axis.
Answer: slope 1; y-intercept 7
In y = (slope)x + (y-intercept), the number multiplying x is the slope and the constant is where the line crosses the y-axis.
- AYes
- BNo
Answer: Yes
Substitute x = −1: y = −5 × (−1) + 2 = 7, which matches.
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