The function ;
f{x} has a slope of 2
g{x} is perpendicular to f{x} , this will mean
g[x} has a slope of -1/2
if g{2} = 5
then you can come up with an equation for this function using the slope and value of x=2 and that of g{x} =5
For example
g{x} = -1/2 x + c =5 where x = 2 this can be written as;
5 = - 1/2 { 2} + c
5= -1 + c
5+1 = c
6 = c so the equation can be written as;
g{x} = -1/2 x + 6
