Ifƒ(x ) = 3x + 1 and ƒ -1 = (x-1)/3, then ƒ(2) = a) 1/3 b) 1 c) 7

The problem gave us the equation for , which was . To find , we can simply substitute 2 in for , as shown below:

The answer is f(2) = 7.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

it has changed from the width and the height.

step-by-step explanation: