Answer:
-5/6x + 7/2 = y
Step-by-step explanation:
f(x) = (21 -6x) /5
y = 1/5 (21 -6x)
To find the inverse exchange x and y
x = 1/5 (21-6y)
Solve for y
Multiply each side by 5
5x = 5* 1/5 (21-6y)
5x = (21-6y)
Subtract 21 from each side
5x -21= (21-21-6y)
5x-21 = -6y
Divide each side by -6
5/-6x-21/-6 = -6/-6y
-5/6x + 7/2 = y
