Answer:

Step-by-step explanation:
We start with the equation:

We want to find the value of:

We can start with our previous equation and multiply both sides by a:

Now we can rewrite our initial expression as:

Replacing that in the right side, we get:

Now again, let's multiply both sides by a

So we can conclude that:

Answer:
(7, -2)
Step-by-step explanation:
Add the points together and divide them by 2:
A+B/2
= ([7 + 7]/2, [3 + -7]/2)
= ([14]/2, [-4]/2)
= (7, -2)
Hello,
f(x) = 1/9x + 2 ⇔ y = 1/9x + 2 ⇔ 1/9x = y - 2 ⇔ x = 9(y - 2)
x = 9y - 18
⇒ f⁻¹(x) = 9x - 18