Graph Graph -9x+5y=45

Graph $- 9 x + 5 y = 45$

Step 1

Solve for $y$ .

Add $9 x$ to both sides of the equation.

$5 y = 45 + 9 x$

Divide each term in $5 y = 45 + 9 x$ by $5$ and simplify.

Divide each term in $5 y = 45 + 9 x$ by $5$ .

$\frac{5 y}{5} = \frac{45}{5} + \frac{9 x}{5}$

Simplify the left side.

Cancel the common factor of $5$ .

Cancel the common factor.

$\frac{5 y}{5} = \frac{45}{5} + \frac{9 x}{5}$

Divide $y$ by $1$ .

$y = \frac{45}{5} + \frac{9 x}{5}$

Simplify the right side.

Divide $45$ by $5$ .

$y = 9 + \frac{9 x}{5}$

Step 2

Rewrite in slope-intercept form.

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

$y = m x + b$

Reorder $9$ and $\frac{9 x}{5}$ .

$y = \frac{9 x}{5} + 9$

Reorder terms.

$y = \frac{9}{5} x + 9$

Step 3

Use the slope-intercept form to find the slope and y-intercept.

Find the values of $m$ and $b$ using the form $y = m x + b$ .

$m = \frac{9}{5}$

$b = 9$

The slope of the line is the value of $m$ , and the y-intercept is the value of $b$ .

Slope: $\frac{9}{5}$

y-intercept: $(0, 9)$

Slope: $\frac{9}{5}$

y-intercept: $(0, 9)$

Step 4

Any line can be graphed using two points. Select two $x$ values, and plug them into the equation to find the corresponding $y$ values.

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

Reorder $9$ and $\frac{9 x}{5}$ .

$y = \frac{9 x}{5} + 9$

Reorder terms.

$y = \frac{9}{5} x + 9$

Create a table of the $x$ and $y$ values.

$\begin{array}{c} x & y \\ 0 & 9 \\ 5 & 18 \end{array}$

Step 5

Graph the line using the slope and the y-intercept, or the points.

Slope: $\frac{9}{5}$

y-intercept: $(0, 9)$

$\begin{array}{c} x & y \\ 0 & 9 \\ 5 & 18 \end{array}$

Step 6

Graph Graph -9x+5y=45

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