Algebra Examples

$2 x - 3 y = 7$

Rewrite in slope-intercept form.

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The slope-intercept form is $y = m x + b$ , where $m$ is the slope and $b$ is the y-intercept.

$y = m x + b$

Subtract $2 x$ from both sides of the equation.

$- 3 y = 7 - 2 x$

Divide each term in $- 3 y = 7 - 2 x$ by $- 3$ and simplify.

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Divide each term in $- 3 y = 7 - 2 x$ by $- 3$ .

$\frac{- 3 y}{- 3} = \frac{7}{- 3} + \frac{- 2 x}{- 3}$

Simplify the left side.

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Cancel the common factor of $- 3$ .

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Cancel the common factor.

$\frac{- 3 y}{- 3} = \frac{7}{- 3} + \frac{- 2 x}{- 3}$

Divide $y$ by $1$ .

$y = \frac{7}{- 3} + \frac{- 2 x}{- 3}$

Simplify the right side.

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Simplify each term.

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Move the negative in front of the fraction.

$y = - \frac{7}{3} + \frac{- 2 x}{- 3}$

Dividing two negative values results in a positive value.

$y = - \frac{7}{3} + \frac{2 x}{3}$

Write in $y = m x + b$ form.

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Reorder $- \frac{7}{3}$ and $\frac{2 x}{3}$ .

$y = \frac{2 x}{3} - \frac{7}{3}$

Reorder terms.

$y = \frac{2}{3} x - \frac{7}{3}$

Using the slope-intercept form, the slope is $\frac{2}{3}$ .

$m = \frac{2}{3}$

All lines that are parallel to $y = \frac{2}{3} x - \frac{7}{3}$ have the same slope of $\frac{2}{3}$ .

$m_{parallel} = \frac{2}{3}$