Struggling to write equation that matches function

Question

Use your graphing calculator to help you complete each part. 

A function multiplies the input by -3 then subtracts 2 to obtain the output. 

1) Write an equation that matches the function description. Use x for the input variable and y for the output variable.

Answer 1

y= -3x -2

on a graph, it's a downward sloping straight line, slope =-3, y intercept =-2 or the point (0,-2), x intercept is -2/3 or the point (-2/3, 0)