#### Answer

$y=−\frac{3}{4}$

#### Work Step by Step

A horizontal line has an equation of the form $y=b$. Since the line contains the point, $(−2,−\frac{3}{4})$, the equation for this line must be $y=−\frac{3}{4}$. The y-coordinate will be $-\frac{3}{4}$ for all values of x.