# Precalculus Examples

Rewrite the function as an equation.

The slope-intercept form is , where is the slope and is the y-intercept.

Find the values of and using the form .

The slope of the line is the value of , and the y-intercept is the value of .

Slope:

y-intercept:

Slope:

y-intercept:

Choose to substitute in for to find the ordered pair.

Replace the variable with in the expression.

Simplify the result.

Multiply by .

Subtract from .

The final answer is .

The first point is .

Choose to substitute in for to find the ordered pair.

Replace the variable with in the expression.

Simplify the result.

Multiply by .

Subtract from .

The final answer is .

The second point is .

Create a table of the and values.

Graph the line using the slope and the y-intercept, or the points.

Slope:

y-intercept: