Precalculus Examples

$y = - x - 4$

Step 1

Choose any value for $x$ that is in the domain to plug into the equation.

Step 2

Choose $0$ to substitute in for $x$ to find the ordered pair.

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Step 2.1

Remove parentheses.

$y = - (0) - 4$

Step 2.2

Simplify $- (0) - 4$ .

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Step 2.2.1

Multiply $- 1$ by $0$ .

$y = 0 - 4$

Step 2.2.2

Subtract $4$ from $0$ .

$y = - 4$

Step 2.3

Use the $x$ and $y$ values to form the ordered pair.

$(0, - 4)$

Step 3

Choose $1$ to substitute in for $x$ to find the ordered pair.

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Step 3.1

Remove parentheses.

$y = - (1) - 4$

Step 3.2

Simplify $- (1) - 4$ .

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Step 3.2.1

Multiply $- 1$ by $1$ .

$y = - 1 - 4$

Step 3.2.2

Subtract $4$ from $- 1$ .

$y = - 5$

Step 3.3

Use the $x$ and $y$ values to form the ordered pair.

$(1, - 5)$

Step 4

Choose $2$ to substitute in for $x$ to find the ordered pair.

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Step 4.1

Remove parentheses.

$y = - (2) - 4$

Step 4.2

Simplify $- (2) - 4$ .

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Step 4.2.1

Multiply $- 1$ by $2$ .

$y = - 2 - 4$

Step 4.2.2

Subtract $4$ from $- 2$ .

$y = - 6$

Step 4.3

Use the $x$ and $y$ values to form the ordered pair.

$(2, - 6)$

Step 5

These are three possible solutions to the equation.

$(0, - 4), (1, - 5), (2, - 6)$

Step 6