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x-intercept of a line from y = mx + b

Year 8 maths · Fieldbook Learning

Name ______________________ Date __________

The x-intercept is where the line crosses the x-axis, so set y = 0 and solve for x.

  1. What is the x-intercept of the line y = 2x + 4?
  2. What is the x-intercept of the line y = −4x + 12?
  3. What is the x-intercept of the line y = −5x + 10?
  4. What is the x-intercept of the line y = 2x + 8?
  5. What is the x-intercept of the line y = 4x + 7?
  6. What is the x-intercept of the line y = 7x − 12?
  7. What is the x-intercept of the line y = 6x − 4?
  8. What is the x-intercept of the line y = −8x + 5?
  9. What is the x-intercept of the line y = −4x + 14?
  10. What is the x-intercept of the line y = 4x + 11?
  11. What is the x-intercept of the line y = −3x + 18?
  12. What is the x-intercept of the line y = −x + 1?
  13. What is the x-intercept of the line y = 10x − 17?
  14. What is the x-intercept of the line y = 8x − 1?
  15. What is the x-intercept of the line y = 3x + 19?
  16. What is the x-intercept of the line y = 3x + 23?
  17. What is the x-intercept of the line y = 4x − 30?
  18. What is the x-intercept of the line y = 12x − 3?
  19. What is the x-intercept of the line y = 5x − 27?
  20. What is the x-intercept of the line y = 3x + 40?
More free practice: fieldbooklearning.com/au/practice/year-8/x-intercept-of-a-line-from-y-mx-b/

Answer key: x-intercept of a line from y = mx + b

  1. -2
  2. 3
  3. 2
  4. -4
  5. -7/4
  6. 12/7
  7. 2/3
  8. 5/8
  9. 7/2
  10. -11/4
  11. 6
  12. 1
  13. 17/10
  14. 1/8
  15. -19/3
  16. -23/3
  17. 15/2
  18. 1/4
  19. 27/5
  20. -40/3