Is (-8, -2) a solution to the inequality y < - ¾ x - 5?

1 answer

To determine if the point (-8, -2) is a solution to the inequality \( y < -\frac{3}{4}x - 5 \), we can substitute \( x = -8 \) and \( y = -2 \) into the inequality.

  1. Substitute \( x = -8 \) into the equation: \[ y < -\frac{3}{4}(-8) - 5 \]

  2. Calculate \(-\frac{3}{4}(-8)\): \[ -\frac{3}{4}(-8) = \frac{3 \cdot 8}{4} = \frac{24}{4} = 6 \]

  3. Now substitute this back into the inequality: \[ y < 6 - 5 \]

  4. Simplify: \[ y < 1 \]

  5. Now substitute \( y = -2 \): \[ -2 < 1 \]

This statement is true.

Since substituting (-8, -2) into the inequality results in a true statement, we conclude that (-8, -2) is a solution to the inequality \( y < -\frac{3}{4}x - 5 \).