Question

Can someone help me find the inverse of this function Let f(x)=x^2-10x+7. Find f(-2).

Answer 1

its inverse fails to be a function

Answer 2

as for f(-2) just plug -2 in for x and evaluate

Answer 3

than can you give me an equation that would be a fuction

Answer 4

yes i did that but what does it mean by inverse

Answer 5

The graph would be a parabola

Answer 6

that's why it doesn't pass the vertical line test and it's not a function

Answer 7

horizontal* line test

Answer 8

it means you need to switch x and y and solve for y

Answer 9

well that can you give me a function @master50777

Answer 10

ok @sourwing but you are saying this is not a function so can you give me one

Answer 11

switch x and y,
x = y^2 - 10y + 7

solve for y

Answer 12

so the answer would be 23 @sourwing

Answer 13

no

Answer 14

than what would it because thats what i got

Answer 15

I think its f-^1(x)=5+√x+18 5−√x+18