Algebra Examples

$y = 2 x$

Step 1

Substitute $- 2$ for $x$ and find the result for $y$ .

$y = 2 (- 2)$

Step 2

Multiply $2$ by $- 2$ .

$y = - 4$

Step 3

Substitute $- 1$ for $x$ and find the result for $y$ .

$y = 2 (- 1)$

Step 4

Multiply $2$ by $- 1$ .

$y = - 2$

Step 5

Substitute $0$ for $x$ and find the result for $y$ .

$y = 2 (0)$

Step 6

Solve the equation for $y$ .

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Step 6.1

Remove parentheses.

$y = 2 (0)$

Step 6.2

Multiply $2$ by $0$ .

$y = 0$

Step 7

Substitute $1$ for $x$ and find the result for $y$ .

$y = 2 (1)$

Step 8

Solve the equation for $y$ .

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Step 8.1

Remove parentheses.

$y = 2 (1)$

Step 8.2

Multiply $2$ by $1$ .

$y = 2$

Step 9

Substitute $2$ for $x$ and find the result for $y$ .

$y = 2 (2)$

Step 10

Solve the equation for $y$ .

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Step 10.1

Remove parentheses.

$y = 2 (2)$

Step 10.2

Multiply $2$ by $2$ .

$y = 4$

Step 11

This is a table of possible values to use when graphing the equation.

$\begin{array}{c} x & y \\ - 2 & - 4 \\ - 1 & - 2 \\ 0 & 0 \\ 1 & 2 \\ 2 & 4 \end{array}$

Step 12