Skip to content
Graphing Lines
Example 7

Example 7: Graphing Linear Functions

Step-by-step worked example for this lesson track.

Problem

If y=3x−3, find y at x=−4\text{If }y=3x-3\text{, find }y\text{ at }x=-4

1. Recognize Pattern

y=mx+by=mx+b

2. Apply Method

y=5x+1,  x=−1⇒y=−4y=5x+1,\;x=-1\Rightarrow y=-4

3. Conclude

y=−15y=-15

Final answer

y=−15y=-15
Previous exampleNext exampleBack to lessonsPractice this skillTry in calculator