Is the point (0, -3) a solution to the inequality: y > 4/5 x - 3? Why or why not?

1 answer

To determine if the point (0, -3) is a solution to the inequality \( y > \frac{4}{5}x - 3 \), we need to substitute \( x = 0 \) and \( y = -3 \) into the inequality and see if it holds true.

  1. Substitute \( x = 0 \) into the inequality: \[ y > \frac{4}{5}(0) - 3 \] Simplifying this gives: \[ y > 0 - 3 \] \[ y > -3 \]

  2. Now substitute \( y = -3 \): \[ -3 > -3 \]

This is not true because \(-3\) is not greater than \(-3\). It's actually equal to \(-3\).

Therefore, the point (0, -3) is not a solution to the inequality \( y > \frac{4}{5}x - 3 \) because it does not satisfy the condition that \( y \) must be greater than \(-3\).