Pre-Algebra Examples

$y = 9 x + 10$

Step 1

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

$y = 9 (- 2) + 10$

Step 2

Simplify $9 (- 2) + 10$ .

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Step 2.1

Multiply $9$ by $- 2$ .

$y = - 18 + 10$

Step 2.2

Add $- 18$ and $10$ .

$y = - 8$

Step 3

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

$y = 9 (- 1) + 10$

Step 4

Simplify $9 (- 1) + 10$ .

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Step 4.1

Multiply $9$ by $- 1$ .

$y = - 9 + 10$

Step 4.2

Add $- 9$ and $10$ .

$y = 1$

Step 5

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

$y = 9 (0) + 10$

Step 6

Solve the equation for $y$ .

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Step 6.1

Remove parentheses.

$y = 9 (0) + 10$

Step 6.2

Simplify $9 (0) + 10$ .

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Step 6.2.1

Multiply $9$ by $0$ .

$y = 0 + 10$

Step 6.2.2

Add $0$ and $10$ .

$y = 10$

Step 7

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

$y = 9 (1) + 10$

Step 8

Solve the equation for $y$ .

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Step 8.1

Remove parentheses.

$y = 9 (1) + 10$

Step 8.2

Simplify $9 (1) + 10$ .

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Step 8.2.1

Multiply $9$ by $1$ .

$y = 9 + 10$

Step 8.2.2

Add $9$ and $10$ .

$y = 19$

Step 9

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

$y = 9 (2) + 10$

Step 10

Solve the equation for $y$ .

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Step 10.1

Remove parentheses.

$y = 9 (2) + 10$

Step 10.2

Simplify $9 (2) + 10$ .

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Step 10.2.1

Multiply $9$ by $2$ .

$y = 18 + 10$

Step 10.2.2

Add $18$ and $10$ .

$y = 28$

Step 11

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

$\begin{array}{c} x & y \\ - 2 & - 8 \\ - 1 & 1 \\ 0 & 10 \\ 1 & 19 \\ 2 & 28 \end{array}$

Step 12