Graph a line from y = mx + b, and make a table of values

Answer Key - Grade 8 Math Worksheet

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

1. 1.

   Bo fills a table of values for y = 2x − 5. What is y when x = -3?

   -11
2. 2.

   Jun fills a table of values for y = 0.5x + 6. What is y when x = 8?

   10
3. 3.

   Kira graphs y = -2x + 5, starting where the line meets the y-axis, then moving 3 across along the line. Which point does Kira reach?

   (3, -1)
4. 4.

   Luz graphs y = -x + 2, starting where the line meets the y-axis, then moving 4 across along the line. Which point does Luz reach?

   (4, -2)
5. 5.

   Pia checks points for the line y = 4x − 3. Which point is on the line?

   • (-7, -1)
   • (-1, -7)
   • (-1, -4)
   • (-1, 1)
6. 6.

   Ren checks points for the line y = -3x − 2. Which point is on the line?

   • (2, -8)
   • (2, -6)
   • (2, 4)
   • (-8, 2)
7. 7.

   Tala makes a table of values (x | y) to graph y = -2x + 3. Which table is right?

   • 0 | 0; 1 | -2; 2 | -4
   • 0 | 3; 1 | 1; 2 | -1
   • 0 | 3; 1 | 5; 2 | 7
   • 0 | -2; 1 | 1; 2 | 4
8. 8.

   Ari makes a table of values (x | y) to graph y = x − 5. Which table is right?

   • 0 | 0; 1 | 1; 2 | 2
   • 0 | -5; 1 | -4; 2 | -3
   • 0 | 1; 1 | -4; 2 | -9
   • 0 | 5; 1 | 6; 2 | 7
9. 9.

   Bo's line crosses the y-axis at 6 and rises 2 for each 1 to the right. What is y on the line at x = 7?

   20
10. 10.

    Esme's line crosses the y-axis at -3 and falls 4 for each 1 to the right. What is y on the line at x = 2?

    -11