Given that a line has its x-intercept as -8 and its y-intercept as 5, we can determine the slope of a line perpendicular to this line below.
Step-by-step explanation
We can derive two points that the given line passes through using the x and y-intercept. This can be expressed as;

Therefore using the slope formula we would have;

For two lines to be perpendicular, their slope can be expressed as;

Answer:
