Is the function y=-3x + 15 quadratic?

Acontractor needs 54 square feet of brick to construct a rectangular walkway. the length of the walkway is 15 feet more than the width. write an equation that could be used to determine the dimensions of the walkway. solve this equation to find the length and width, in feet, of the walkway.

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)