For this case we have that by definition, the equation of a line of the slope-intersection form is given by:

Where:
m: It's the slope
b: It is the cut-off point with the y axis
In addition, if two lines are perpendicular then the product of their slopes is -1. That is to say:
We have the following line:

So, we have to:

We find


Therefore, the line is of the form:

We substitute the given point to find "b":

Finally, the equation is:

ANswer:
