Precalculus Examples

$y = \sin (x)$

To find the y-intercept(s), substitute in $0$ for $x$ and solve for $y$ .

$y = \sin (0)$

Solve the equation.

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Remove parentheses.

$y = \sin (0)$

The exact value of $\sin (0)$ is $0$ .

$y = 0$

y-intercept(s) in point form.

y-intercept(s): $(0, 0)$