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Year 8 Gradient and Linear Equations Worksheet — Level 1 — Practice Set 2 — Answers

Answer sheet with worked solutions for the Year 8 linear relationships & graphs worksheet.

Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · Linear Relationships & Graphs

Year 8 Gradient and Linear Equations Worksheet — Level 1 — Practice Set 2 — Answers

Show your working. Gradient = rise ÷ run; the equation of a line can be written as y = (gradient)x + (y-intercept).

1.Find the gradient of the line through (0, 4) and (−1, 2).

Answer: 2

  1. gradient = rise ÷ run = (2 − 4) ÷ (−1 − 0)
  2. = −2 ÷ −1 = 2
2.For the line y = 6x − 9, write the gradient and the y-intercept.

Answer: gradient 6; y-intercept −9

In y = (gradient)x + (y-intercept), the number multiplying x is the gradient and the constant is where the line crosses the y-axis.

3.Find the gradient of the line through (2, −6) and (−2, −2).

Answer: −1

  1. gradient = rise ÷ run = (−2 − (−6)) ÷ (−2 − 2)
  2. = 4 ÷ −4 = −1
4.Find the gradient of the line through (5, 3) and (7, 1).

Answer: −1

  1. gradient = rise ÷ run = (1 − 3) ÷ (7 − 5)
  2. = −2 ÷ 2 = −1
5.Find the gradient of the line through (3, −1) and (2, 1).

Answer: −2

  1. gradient = rise ÷ run = (1 − (−1)) ÷ (2 − 3)
  2. = 2 ÷ −1 = −2
6.For the line y = −x − 5, write the gradient and the y-intercept.

Answer: gradient −1; y-intercept −5

In y = (gradient)x + (y-intercept), the number multiplying x is the gradient and the constant is where the line crosses the y-axis.

7.Find the gradient of the line through (1, −3) and (0, −6).

Answer: 3

  1. gradient = rise ÷ run = (−6 − (−3)) ÷ (0 − 1)
  2. = −3 ÷ −1 = 3
8.Find the gradient of the line through (2, −5) and (3, −8).

Answer: −3

  1. gradient = rise ÷ run = (−8 − (−5)) ÷ (3 − 2)
  2. = −3 ÷ 1 = −3
9.Find the gradient of the line through (6, 6) and (9, 0).

Answer: −2

  1. gradient = rise ÷ run = (0 − 6) ÷ (9 − 6)
  2. = −6 ÷ 3 = −2
10.For the line y = 6x + 4, write the gradient and the y-intercept.

Answer: gradient 6; y-intercept 4

In y = (gradient)x + (y-intercept), the number multiplying x is the gradient and the constant is where the line crosses the y-axis.

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