Help please I will give you a

y = 3x - 2

good luck, i hope this helps :)

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this

it has to have an angle of 90 degrees