### Home > GC > Chapter 1 > Lesson 1.2.2 > Problem1-67

1-67.

For each equation below, find $y$ if $x=-3$.

1. $y=-\frac{1}{3}x-5$

Substitute $−3$ for $x$ and solve for $y$.

$\begin{array}{l} y=-\frac{1}{3}x-5\\ y=-\frac{1}{3}(-3)-5\\ y=1-5=-4 \end{array}$

1. $y=2x^2-3x-2$

The square of a negative number is always a positive number.

$y=25$

1. $2x-5y=4$

$y=-2$