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3 years ago

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

Mathematics

2 answers:

kolezko [41]3 years ago

8 0

Answer: $f^{-1}$ (x) = $\frac{x+10}{7}$

Step-by-step 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) = $\frac{x+10}{7}$

Kryger [21]3 years ago

6 0

Answer:

Step-by-step 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

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Step-by-step explanation:

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