Which of the following points is a solution to the linear inequality: y > 1/9 x - 2/9

A. (0, - 2/9)
B. (0, - 4/9)
C. (0, - 1/3)
D. (0, - 1/9)

1 answer

To determine which of the given points is a solution to the inequality \( y > \frac{1}{9}x - \frac{2}{9} \), we will substitute the x-coordinates of the points into the inequality.

Since all the provided points have an x-coordinate of 0, we can substitute \( x = 0 \) into the inequality:

\[ y > \frac{1}{9}(0) - \frac{2}{9} \] \[ y > -\frac{2}{9} \]

Now we can evaluate each point:

A. \( (0, -\frac{2}{9}) \)
Substituting \( y = -\frac{2}{9} \): \[ -\frac{2}{9} > -\frac{2}{9} \quad \text{(false)} \]

B. \( (0, -\frac{4}{9}) \)
Substituting \( y = -\frac{4}{9} \): \[ -\frac{4}{9} > -\frac{2}{9} \quad \text{(false)} \]

C. \( (0, -\frac{1}{3}) \)
Substituting \( y = -\frac{1}{3} \) (which is equal to \(-\frac{3}{9}\)): \[ -\frac{3}{9} > -\frac{2}{9} \quad \text{(false)} \]

D. \( (0, -\frac{1}{9}) \)
Substituting \( y = -\frac{1}{9} \): \[ -\frac{1}{9} > -\frac{2}{9} \quad \text{(true)} \]

Only point D is greater than \(-\frac{2}{9}\).

So, the solution to the linear inequality is: D. (0, -1/9)