Asked by tracy
Find the Inverse
(x)=√2x+9
(x)=√2x+9
Answers
Answered by
Brian
I'm going to assume that the only thing under the square root symbol is the 2.
Write your equation with a "y" on the left side:
y = √2x+9
And then to find the inverse, you first just switch the x's and the y's, and get,
x = √2y+9
And then you solve this for y,
Flip it around,
√2y+9 = x
Move the 9 over to the right side,
√2y = x - 9
Divide both sides by √2, which will just leave a y on the left side,
y = (x - 9)/√2
Write your equation with a "y" on the left side:
y = √2x+9
And then to find the inverse, you first just switch the x's and the y's, and get,
x = √2y+9
And then you solve this for y,
Flip it around,
√2y+9 = x
Move the 9 over to the right side,
√2y = x - 9
Divide both sides by √2, which will just leave a y on the left side,
y = (x - 9)/√2
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