Question
Asked Oct 19, 2019
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Suppose fis the function f(x)-5+ 7x . For what input(s) x isf(x)=5??
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Suppose fis the function f(x)-5+ 7x . For what input(s) x isf(x)=5??

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Expert Answer

Step 1

The given function is f(x) = 5 + 7x

To find the value of x for which |f(x)| = 5.

Step 2

Concept used: Absolute rule

If |x| = a then x = a or x = -a

Step 3

The x can be evaluated ...

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5+7x 5 Using absolute rule 5+7x 5 5 7x5 or 7x 5-5 7x -5-5 x = -10/7

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Tagged in

Math

Algebra

Equations and In-equations