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

Answer Key - Grade 8 Math Worksheet - Building Confidence

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

1. 1.

   Bo fills a table for y = 2x + 9. The row for x = 6 is set up as 2 × 6 + 9. What is y in that row?

   21
2. 2.

   Esme fills a table for y = 4x + 1. The row for x = 5 is set up as 4 × 5 + 1. What is y in that row?

   21
3. 3.

   Jun fills a table of values for y = 5x + 3. What is y when x = 4?

   23
4. 4.

   Kira fills a table of values for y = 2x + 7. What is y when x = 8?

   23
5. 5.

   Luz fills a table of values for y = 6x + 1. What is y when x = 3?

   19
6. 6.

   Milo graphs y = 2x + 1, starting where the line meets the y-axis, then moving 2 across along the line. Which point does Milo reach?

   (2, 5)
7. 7.

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

   (3, 11)
8. 8.

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

   (4, 8)
9. 9.

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

   • (11, 4)
   • (4, 8)
   • (4, 11)
   • (4, 9)
10. 10.

    Zee checks points for the line y = 5x + 2. Which point is on the line?

    • (2, 10)
    • (2, 9)
    • (2, 12)
    • (12, 2)