Find the intercepts and graph a line from any form, including horizontal and vertical lines

Answer Key - Grade 9 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. 1.

   The line is 3x + 2y = 18. Zee's line is 3x + 2y = 18. Covering the 2y term leaves 3x = 18. What is the x-intercept?

   6
2. 2.

   The line is 2x + 5y = 20. Milo's line is 2x + 5y = 20. Covering the 2x term leaves 5y = 20. What is the y-intercept?

   4
3. 3.

   The line is 3x + 6y = 42. Pia's line is 3x + 6y = 42. Covering the 3x term leaves 6y = 42. What is the y-intercept?

   7

4. Read this first

   Input–output table

   x	y
   0	6
   2	3
   4	0
   6	-3

   Rows in order.

5. 4.

   Jun logs a line in a table of values. What is the y-intercept of the line?

   6
6. 5.

   Tala logs a line in a table of values. What is the x-intercept of the line?

   3
7. 6.

   Luz logs a line in a table of values. What is the y-intercept of the line?

   -4
8. 7.

   Ari logs a line in a table of values. What is the y-intercept of the line?

   4
9. 8.

   9 | 0 and 0 | 6. Put each row into 2x + 3y = 18 to check. Noah wants the intercepts of 2x + 3y = 18. Which two points are the x-intercept and the y-intercept, in that order?

   • (18, 0) and (0, 18)
   • (2, 0) and (0, 3)
   • (0, 9) and (6, 0)
   • (9, 0) and (0, 6)
10. 9.

    10 | 0 and 0 | 6. Put each row into 3x + 5y = 30 to check. Esme wants the intercepts of 3x + 5y = 30. Which two points are the x-intercept and the y-intercept, in that order?

    • (3, 0) and (0, 5)
    • (30, 0) and (0, 30)
    • (10, 0) and (0, 6)
    • (0, 10) and (6, 0)
11. 10.

    4 | 0 and 0 | 14. Put each row into 7x + 2y = 28 to check. Ren wants the intercepts of 7x + 2y = 28. Which two points are the x-intercept and the y-intercept, in that order?

    • (7, 0) and (0, 2)
    • (0, 4) and (14, 0)
    • (4, 0) and (0, 14)
    • (28, 0) and (0, 28)