Answer:
Step-by-step explanation:
By inspection we can see that when x=0 y=-9 so the y intercept, ‘b’=-9
We can also see the point (1,-5). The slope, ‘m’, is defined as
m=(y2-y1)/(x2-x1), we have two points (0,-9) and (1,-5) so
m=(-5+9)/(1-0)=4, so y=mx+b is
y=4x-9
