Question

Help
If f(x)=-3x+3, then f^-1(x)=

Answer 1

first find x in terms of f(x)
can you do that?

Answer 2

no

Answer 3

ok its like solving for x
f(x) = -3x + 3
add 3x to both sides

f(x) + 3x = -3x + 3x + 3

the tems in x disappear on right side
3x + f(x) = 3
now subtract f(x) from both sides
3x = 3 - f(x)
finally divide both sides by 3:-
x = (3 - f(x)) / 3

replace f(x) by x and we have the inverse of f(x)
f-1 (x) = (3 - x)/3

Answer 4

that is it

Answer 5

so solve for the bottom one or is that the answer

Answer 6

That is the answer

Answer 7

f^-1 (x) is the inverse of f(x)

Answer 8

Thank you

Answer 9

yw

Answer 10

but how would you do this one
If f(x)=3x-7, then f^-1(x)=

Answer 11

in a similar way to the first

Answer 12

i tried but i don't get it