Let $f ( x ) = \frac { 4 } { 5 } x - 1$ . For what value of x is $f ( x ) = 2$ ?
A) $x = \frac { 15 } { 4 }$
B) $x = \frac { 3 } { 5 }$
C) $x = \frac { 12 } { 5 }$
D) $x = \frac { 5 } { 4 }$

Question

Quizplus · Accepted Answer

To find the value of $x$ for which $f(x) = 2$, substitute $2$ for $f(x)$ in the equation and solve for $x$: $\frac{4}{5}x - 1 = 2$. Solving this equation gives $x = \frac{15}{4}$.

Let f(x)=45x−1f ( x ) = \frac { 4 } { 5 } x - 1f(x)=54​x−1

Let $f ( x ) = \frac { 4 } { 5 } x - 1$