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Year 10 Gradient and Linear Equations Worksheet — Level 1 — Practice Set 3 — Answers

Answer sheet with worked solutions for the Year 10 linear relationships & graphs worksheet.

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Year 10 Gradient and Linear Equations Worksheet — Level 1 — Practice Set 3 — 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 (−2, −5) and (0, −11).

Answer: −3

  1. gradient = rise ÷ run = (−11 − (−5)) ÷ (0 − (−2))
  2. = −6 ÷ 2 = −3
2.Find the gradient of the line through (6, −5) and (9, −11).

Answer: −2

  1. gradient = rise ÷ run = (−11 − (−5)) ÷ (9 − 6)
  2. = −6 ÷ 3 = −2
3.For the line y = 2x + 6, write the gradient and the y-intercept.

Answer: gradient 2; y-intercept 6

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

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

Answer: 3

  1. gradient = rise ÷ run = (6 − 0) ÷ (3 − 1)
  2. = 6 ÷ 2 = 3
5.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.

6.Find the gradient of the line through (−5, 3) and (−2, −6).

Answer: −3

  1. gradient = rise ÷ run = (−6 − 3) ÷ (−2 − (−5))
  2. = −9 ÷ 3 = −3
7.For the line y = −4x − 6, write the gradient and the y-intercept.

Answer: gradient −4; y-intercept −6

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

8.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.

9.For the line y = −x + 2, write the gradient and the y-intercept.

Answer: gradient −1; y-intercept 2

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

10.For the line y = −4x − 2, write the gradient and the y-intercept.

Answer: gradient −4; y-intercept −2

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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