Question

Last Question HELP

What is the inverse of `y = 5x + 7

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Answer 1

• y=5x+7

Take this and solve for x

• 5x=y-7
• x=y-7/5

Interchange y and x

• y=x-7/5

So

The inverse is

`\\ \rm\dashrightarrow y^(-1)(x)=(x-7)/(5)`

Answer 2

`\sf y' = (x-7)/(5)`

Step-by-step explanation:

⇒ y = 5x + 7

⇒ 5x + 7 = y

⇒ 5x = y - 7

⇒ x = (y-7)/5

replace x with y

⇒ y' = (x-7)/5