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.

   Ari fills a table for y = 3x + 7. The row for x = 4 is set up as 3 × 4 + 7. What is y in that row?

   19
2. 2.

   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
3. 3.

   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
4. 4.

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

   23
5. 5.

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

   23
6. 6.

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

   19
7. 7.

   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)
8. 8.

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

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

   Tala checks points for the line y = 3x + 1. Which point is on the line?

   • (3, 7)
   • (3, 9)
   • (3, 10)
   • (10, 3)
10. 10.

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

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