Pre-Algebra Examples

$3 x - 7 = - 13$

Step 1

Solve for $y$ .

Tap for more steps...

Step 1.1

Move all terms not containing $x$ to the right side of the equation.

Tap for more steps...

Step 1.1.1

Add $7$ to both sides of the equation.

$3 x = - 13 + 7$

Step 1.1.2

Add $- 13$ and $7$ .

$3 x = - 6$

Step 1.2

Divide each term in $3 x = - 6$ by $3$ and simplify.

Tap for more steps...

Step 1.2.1

Divide each term in $3 x = - 6$ by $3$ .

$\frac{3 x}{3} = \frac{- 6}{3}$

Step 1.2.2

Simplify the left side.

Tap for more steps...

Step 1.2.2.1

Cancel the common factor of $3$ .

Tap for more steps...

Step 1.2.2.1.1

Cancel the common factor.

$\frac{3 x}{3} = \frac{- 6}{3}$

Step 1.2.2.1.2

Divide $x$ by $1$ .

$x = \frac{- 6}{3}$

Step 1.2.3

Simplify the right side.

Tap for more steps...

Step 1.2.3.1

Divide $- 6$ by $3$ .

$x = - 2$

Step 2

Since $x = - 2$ is a vertical line, there is no y-intercept and the slope is undefined.

Slope: Undefined

y-intercept: No y-intercept

Step 3

Find two points on the line.

$\begin{array}{c} x & y \\ - 2 & 0 \\ - 2 & 1 \end{array}$

Step 4

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

Slope: Undefined

y-intercept: No y-intercept

$\begin{array}{c} x & y \\ - 2 & 0 \\ - 2 & 1 \end{array}$

Step 5