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Find the inverse of y=7x-10. Is the inverse a function?

User Pradeep SJ
by
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2 Answers

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Answer:

Explanation:

y=7x-10 calculate x : 7x-10 =y

7x = y+10

x = 1/7 y +10/7

the inverse of y=7x-10 is ; y = 1/7 x +10/7

User Gabe Morris
by
8.0k points
0 votes

Answer:
f^(-1) (x) =
(x+10)/(7)

Explanation:

To find the inverse , all we need do is to make x the subject of the formula.

y = 7x - 10

Add 10 to both sides

y + 10 = 7x

divide both sides by 7

Therefore:

x = y + 10 / 7 , that is


f^(-1) (x) =
(x+10)/(7)

User Stevebot
by
8.2k points

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