What is the equation of a line perpendicular to y = that passes through point (-2, 4)?

Since the given line



has slope


The equation of the line perpendicular to it must have a slope which is the negative reciprocal of ,

The slope of the perpendicular line

Using the slope intercept form,


We substitute

This implies that,

Since


lies on this line , it must satisfy its equation.

That is



This implies that





The line therefore has equation,

77 degrees because the bottom is 77° too