Question

graph the following equation in a rectangular coordinate system. 7x + 28 = 0 use the graphing tool to graph the line. click to enlarge graph

Explanation:

Step1: Isolate the x variable

Subtract 28 from both sides.
$7x + 28 - 28 = 0 - 28$
$7x = -28$

Step2: Solve for x

Divide both sides by 7.
$x = \frac{-28}{7}$
$x = -4$

Answer:

This is a vertical line passing through the point $(-4, y)$ for all real values of $y$. To graph it, draw a straight vertical line that crosses the x-axis at $x=-4$.