Question: Graph the function and determine whether the function is one-to-one using the horizontal-line test. a. f (x) = - | x | + 3 b.

Graph the function and determine whether the function is one-to-one using the horizontal-line test.
a. f (x) = - | x | + 3
b. f (x) = x2 + 1
c. f (x) = 2x - 3 / 4

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