Precalculus Examples

$- 5 y = 15$

Step 1

Find the x-intercepts.

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Divide each term in $- 5 y = 15$ by $- 5$ and simplify.

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Divide each term in $- 5 y = 15$ by $- 5$ .

$\frac{- 5 y}{- 5} = \frac{15}{- 5}$

Simplify the left side.

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Cancel the common factor of $- 5$ .

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Cancel the common factor.

$\frac{- 5 y}{- 5} = \frac{15}{- 5}$

Divide $y$ by $1$ .

$y = \frac{15}{- 5}$

Simplify the right side.

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Divide $15$ by $- 5$ .

$y = - 3$

Since $y = - 3$ is a horizontal line, the x-intercept(s) is equal to the value of $y$ .

x-intercept(s): $None$

Step 2

Since $y = - 3$ is a horizontal line, the y-intercept(s) is equal to the value of $y$ .

y-intercept(s): $- 3$

Step 3

List the intersections.

x-intercept(s): $None$

y-intercept(s): $- 3$

Step 4