Answer:
y= -1/5x+12
Step-by-step explanation:
since the lines are perpendicular to each other the product of their gradient is equal to-1.
the gradient of l1 is 5 therefore the gradient of l2 is -1/5.
equation=(15,9) ,(x,y) =-1/5
change in y/change in x=y-9/x-15= -1/5
5(y-9)=-1(x-15)=
5y-45=-x+15=
5y=-x+60/5=
y=-1/5x+12
