The math teacher asked his students to determine a solution for

1.5x - 2y = 8. Which solution below is the correct one? (1 point)

A. (-4,7)
B. (4,-7)
C. (-4,-7)
D. (4,7)

1 answer

To determine which solution satisfies the equation \(1.5x - 2y = 8\), we can substitute each given point into the equation and check if the equation holds true.

  1. For A. \((-4, 7)\): \[ 1.5(-4) - 2(7) = -6 - 14 = -20 \quad (\text{not } 8) \]

  2. For B. \((4, -7)\): \[ 1.5(4) - 2(-7) = 6 + 14 = 20 \quad (\text{not } 8) \]

  3. For C. \((-4, -7)\): \[ 1.5(-4) - 2(-7) = -6 + 14 = 8 \quad (\text{correct}) \]

  4. For D. \((4, 7)\): \[ 1.5(4) - 2(7) = 6 - 14 = -8 \quad (\text{not } 8) \]

The correct solution that satisfies the equation \(1.5x - 2y = 8\) is C. \((-4, -7)\).