Step-by-step explanation:
The slope-intercept form of an equation of a line:

<em>m</em><em> - slope</em>
<em>b</em><em> - y-intercept (0, b)</em>
We have

Substitute:

We only need two points to draw a line.
One we have: y-intercept → (0, -7).
Calculate other point:
Substitute <em>x = -3</em> to the equation of a line:

Mark the points on the coordinate plane and draw a line through the given points.