# Precalculus Examples

,

Step 1

Step 1.1

Use the formula for the equation of a line to find .

Step 1.2

Substitute the value of into the equation.

Step 1.3

Substitute the value of into the equation.

Step 1.4

Substitute the value of into the equation.

Step 1.5

Find the value of .

Step 1.5.1

Rewrite the equation as .

Step 1.5.2

Multiply by .

Step 1.5.3

Move all terms not containing to the right side of the equation.

Step 1.5.3.1

Subtract from both sides of the equation.

Step 1.5.3.2

Subtract from .

Step 2

Now that the values of (slope) and (y-intercept) are known, substitute them into to find the equation of the line.

Step 3