Step-by-step explanation:
The slope-intercept form of an equation of a line:
[tex]y=mx+b[/tex]
m - slope
b - y-intercept (0, b)
We have
[tex]m=-\dfrac{1}{3},\ b=-7[/tex]
Substitute:
[tex]y=-\dfrac{1}{3}x-7[/tex]
We only need two points to draw a line.
One we have: y-intercept → (0, -7).
Calculate other point:
Substitute x = -3 to the equation of a line:
[tex]y=-\dfrac{1}{3}(-3)-7=1-7=-6\to(-3,\ -6)[/tex]
Mark the points on the coordinate plane and draw a line through the given points.