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Given
f(x)=-x-3, solve for
x when
f(x)=0.
Answer:

Given $f(x)=-x-3$ , solve for $x$ when $f(x)=0$ . $\newline$ Answer:

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Find a value using two-variable equations

Full solution

Q. Given

f(x)=-x-3

, solve for

x

when

f(x)=0

.

\newline

Answer:

Set $f(x)$ to $0$ : We are given the function $f(x) = -x - 3$ and we need to find the value of $x$ when $f(x) = 0$ . Set $f(x)$ to $0$ and solve for $x$ . $0 = -x - 3$
Add $3$ to isolate x: Add $3$ to both sides of the equation to isolate the term containing $x$ . $0 + 3 = -x - 3 + 3$ $3 = -x$
Multiply by $-1$ : Multiply both sides by $-1$ to solve for $x$ . $-1 \times 3 = -1 \times (-x)$ $-3 = x$

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\newline

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\newline

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\newline

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\newline

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\newline

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