Precalculus Examples

$y = x + 5$

Step 1

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

$y = (- 2) + 5$

Step 2

Solve the equation for $y$ .

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Step 2.1

Remove parentheses.

$y = - 2 + 5$

Step 2.2

Remove parentheses.

$y = (- 2) + 5$

Step 2.3

Add $- 2$ and $5$ .

$y = 3$

Step 3

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

$y = (- 1) + 5$

Step 4

Solve the equation for $y$ .

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Step 4.1

Remove parentheses.

$y = - 1 + 5$

Step 4.2

Remove parentheses.

$y = (- 1) + 5$

Step 4.3

Add $- 1$ and $5$ .

$y = 4$

Step 5

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

$y = (0) + 5$

Step 6

Solve the equation for $y$ .

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Step 6.1

Remove parentheses.

$y = 0 + 5$

Step 6.2

Remove parentheses.

$y = (0) + 5$

Step 6.3

Add $0$ and $5$ .

$y = 5$

Step 7

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

$y = (1) + 5$

Step 8

Solve the equation for $y$ .

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Step 8.1

Remove parentheses.

$y = 1 + 5$

Step 8.2

Remove parentheses.

$y = (1) + 5$

Step 8.3

Add $1$ and $5$ .

$y = 6$

Step 9

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

$y = (2) + 5$

Step 10

Solve the equation for $y$ .

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Step 10.1

Remove parentheses.

$y = 2 + 5$

Step 10.2

Remove parentheses.

$y = (2) + 5$

Step 10.3

Add $2$ and $5$ .

$y = 7$

Step 11

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

$\begin{array}{c} x & y \\ - 2 & 3 \\ - 1 & 4 \\ 0 & 5 \\ 1 & 6 \\ 2 & 7 \end{array}$

Step 12

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