8
lesson pretestMultiple Choice

Pretest

Question 8 • Math 3

Which equation is the inverse of y is equal to 100 minus x squared ?

Answer
A
y is equal to plus or minus square root of 100 minus x end root
B
y is equal to plus or minus square root of x minus 100 end root
C
y is equal to 100 plus or minus square root of x
D
y is equal to 10 plus or minus square root of x

Explanation

To find the inverse, switch x and y in y = 100 − x², giving x = 100 − y². Solving for y gives y² = 100 − x, so y = ±√(100 − x), which is choice C.

AI-written and checked against the verified answer.

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