Find the equation of line l, where l is perpendicular to y=3/4x and passes through the point (4,3) y=?

Given the graph below state whether or not the relation is a function, and give the domain and range.

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

What is the equation of the graph below? y=sec(x)-4