Answer:
y = 4x + 21
Explanation:
point (-6, -3) and slope = 4
equation format: y = mx + b
where m equals slope and b equal y-intercept
so far we know: y = 4x + b
Now substitute in your given points (-6 , -3) so x = -6 and y = -3
-3 = 4(-6) + b
-3 = -24 + b
add 24 to both sides:
-3 + 24 = -24 + b + 24
21 = b
so:
y = 4x + 21