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Question about Functions: Absolute Value

Math

Originais Teachy

Functions: Absolute Value

Medium

(Originais Teachy 2023) - Question Medium of Math

João is studying the different mathematical functions and comes across the modular function. He learned that in a modular function, the output (y) is equal to the absolute value of the input (x). Considering the modular function f(x) = |x|, if the output (y) is 7, what value should João enter as the input (x)?
a.
x = 7 or x = -7
b.
x = 14
c.
X = 0
d.
x = 7 or x = 0
e.
x = -7 or x = 0

Answer:

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