What is it defintion of exponential growth

Match the equivalent expressions. x - 3y + 12 12 - 3y - 2x + x + 2x 3x + 2y - 2x + y + 12 3y + 12 3x + y - 12 4y + 3y + 3x - 6y - 10 - 2 x + 3y + 2x - 3x + 7 + 5 x + 3y + 12 5 + 2y + 7x - 4x + 3y - 17

Ill mark the brainliest if you me with the these three questions 7,8,9

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.