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Given
f(x)=-5x-3, solve for
x when
f(x)=-3.
Answer:

Given $f(x)=-5 x-3$ , solve for $x$ when $f(x)=-3$ . $\newline$ Answer:

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Find a value using two-variable equations

Full solution

Q. Given

f(x)=-5 x-3

, solve for

x

when

f(x)=-3

.

\newline

Answer:

Write Function and Value: Write down the given function and the value for $f(x)$ . We are given $f(x) = -5x - 3$ and we need to find $x$ when $f(x) = -3$ .
Substitute into Equation: Substitute the given value of $f(x)$ into the equation. $f(x) = -5x - 3$ $-3 = -5x - 3$
Solve for x: Solve for x. $\newline$ Add $3$ to both sides of the equation to isolate the term with $x$ . $\newline$ $-3 + 3 = -5x - 3 + 3$ $\newline$ $0 = -5x$
Divide to Find x: Divide both sides by $-5$ to solve for x. $\newline$ $0 / -5 = -5x / -5$ $\newline$ $x = 0$

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