Is this point a solution of the equation?

Answer Key - Grade 8 Math Worksheet

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

1. 1.

   Noah tests the point (2, 1) on the line y = 3x − 5. Is (2, 1) a solution?

   • No
   • Yes
   • Cannot tell without a graph
2. 2.

   Pia tests the point (7, -2) on the line y = -x + 5. Is (7, -2) a solution?

   • Cannot tell without a graph
   • No
   • Yes
3. 3.

   Ren tests the point (1, 4) on the line y = 4x + 2. Is (1, 4) a solution?

   • Yes
   • No
   • Cannot tell without a graph
4. 4.

   Zee tests the point (5, 3) on the line y = x + 2. Is (5, 3) a solution?

   • Yes
   • Cannot tell without a graph
   • No
5. 5.

   Bo's line is y = 2x − 5. Which of these points is a solution?

   • (4, 8)
   • (3, 4)
   • (4, 3)
   • (4, 13)
6. 6.

   Esme's line is y = -x + 6. Which of these points is a solution?

   • (5, -5)
   • (5, 11)
   • (5, 1)
   • (1, 5)
7. 7.

   Jun's line is y = 4x − 1. Which of these points is a solution?

   • (-2, -8)
   • (-2, -7)
   • (-2, -9)
   • (-9, -2)
8. 8.

   Kira's line is y = 3x − 4. The point (5, ?) is on the line. What number goes in place of the ?

   11
9. 9.

   Milo's line is y = 2x + 5. The point (?, 13) is on the line. What number goes in place of the ?

   4
10. 10.

    Noah's line is y = 3x − 1. The point (?, -7) is on the line. What number goes in place of the ?

    -2