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katlin95
What is the inverse of y = 3x + 9?
you guys mean y=9x+3 right?
A. y= 1/3x-3 B. y=9x+3 C. y=1/3x+9 D. y=-1/3x-3
still got y=3x+9 I think the actual answer is B
cause were working with "inverse"
Hi friend, you just replace x by y and y by x to get the inverse function. and then solve for y . to your problem, when replace you have x= 3y + 9 ---> 3y =x-9---> y = (x -9)/3 or y = 1/3x -3 . that is inverse function of your function hope this help
so @Hoa our answer would be y=1/3x-3
absolutely right. and that is the easiest way to get the inverse function