Algebra Examples

f (x) = 4 x

$f (x) = 4 x$

Step 1

Substitute

- 2

$- 2$ for

x

$x$ and find the result for

y

$y$ .

y = 4 (- 2)

$y = 4 (- 2)$

Step 2

Multiply

4

$4$ by

- 2

$- 2$ .

y = - 8

$y = - 8$

Step 3

Substitute

- 1

$- 1$ for

x

$x$ and find the result for

y

$y$ .

y = 4 (- 1)

$y = 4 (- 1)$

Step 4

Multiply

4

$4$ by

- 1

$- 1$ .

y = - 4

$y = - 4$

Step 5

Substitute

0

$0$ for

x

$x$ and find the result for

y

$y$ .

y = 4 (0)

$y = 4 (0)$

Step 6

Solve the equation for

y

$y$ .

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Step 6.1

Remove parentheses.

y = 4 (0)

$y = 4 (0)$

Step 6.2

Multiply

4

$4$ by

0

$0$ .

y = 0

$y = 0$

y = 0

$y = 0$

Step 7

Substitute

1

$1$ for

x

$x$ and find the result for

y

$y$ .

y = 4 (1)

$y = 4 (1)$

Step 8

Solve the equation for

y

$y$ .

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Step 8.1

Remove parentheses.

y = 4 (1)

$y = 4 (1)$

Step 8.2

Multiply

4

$4$ by

1

$1$ .

y = 4

$y = 4$

y = 4

$y = 4$

Step 9

Substitute

2

$2$ for

x

$x$ and find the result for

y

$y$ .

y = 4 (2)

$y = 4 (2)$

Step 10

Solve the equation for

y

$y$ .

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Step 10.1

Remove parentheses.

y = 4 (2)

$y = 4 (2)$

Step 10.2

Multiply

4

$4$ by

2

$2$ .

y = 8

$y = 8$

y = 8

$y = 8$

Step 11

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

\begin{array}{c} x & y \\ - 2 & - 8 \\ - 1 & - 4 \\ 0 & 0 \\ 1 & 4 \\ 2 & 8 \end{array}

$\begin{array}{c} x & y \\ - 2 & - 8 \\ - 1 & - 4 \\ 0 & 0 \\ 1 & 4 \\ 2 & 8 \end{array}$

Step 12