Answer:
y=-0.4x-1
Step-by-step explanation:
lets write the equation of the perpendicular graph: y=2.5x+1
Two graphs are perpendicular if the multiplication of their slopes are equal to -1.
So we can say that: 2.5*x=-1 → x=-0.4
Now we will find the needed graph with the help of the slope and the point (0,-1):
y-(-1)=-0.4*(x-0) → y+1=-0.4x → y=-0.4x-1
