slope of y = -x + 1 is -1
so the slope of desired line = -(-1) = 1
equation of the line:
[tex]\frac{y-9}{x-0} =1\\y-9=x\\y=x+9[/tex]
Answer:
y=x+9
y=mx+c
where m is gradient, c is the intercept
for perpendicular line m1/m2=-1
m1=m2*(-1)
m1=-1*-1=1
y-9/x-0=1
y=x+9
