Graph y=2x+9 y=6-x

$y = 2 x + 9$ $y = 6 - x$

Step 1

Graph $y = 2 x + 9$ .

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

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

$y = m x + b$

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

$m = 2$

$b = 9$

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

Slope: $2$

y-intercept: $(0, 9)$

Slope: $2$

y-intercept: $(0, 9)$

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

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

$\begin{array}{c} x & y \\ 0 & 9 \\ 1 & 11 \end{array}$

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

Slope: $2$

y-intercept: $(0, 9)$

$\begin{array}{c} x & y \\ 0 & 9 \\ 1 & 11 \end{array}$

Slope: $2$

y-intercept: $(0, 9)$

$\begin{array}{c} x & y \\ 0 & 9 \\ 1 & 11 \end{array}$

Step 2

Graph $y = 6 - x$ .

Reorder $6$ and $- x$ .

$y = - x + 6$

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

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

$y = m x + b$

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

$m = - 1$

$b = 6$

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

Slope: $- 1$

y-intercept: $(0, 6)$

Slope: $- 1$

y-intercept: $(0, 6)$

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

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

$\begin{array}{c} x & y \\ 0 & 6 \\ 1 & 5 \end{array}$

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

Slope: $- 1$

y-intercept: $(0, 6)$

$\begin{array}{c} x & y \\ 0 & 6 \\ 1 & 5 \end{array}$

Slope: $- 1$

y-intercept: $(0, 6)$

$\begin{array}{c} x & y \\ 0 & 6 \\ 1 & 5 \end{array}$

Step 3

Plot each graph on the same coordinate system.

$y = 2 x + 9$

$y = 6 - x$

Step 4

Graph y=2x+9 y=6-x

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