Answer:
8. y = -3x - 4
9. y = -5
Step-by-step explanation:
8. The points are (-3, 5) and (0, -4)
(x1, y1) (x2, y2)
The gradient formula is (y2 - y1)/(x2 - x1)
(-4 - 5)/(0 - (-3))
-9/3
m (gradient) = -3
y = -3x + c
c is the y - intercept and it is given that when x is 0, y = -4 (this is our y-intercept)
Hence: y = -3x - 4
9. It doesn't have a slope, meaning the line is going horizontally. If it is going horizontally then it would be on the y-axis. Hence y = -5
