Free Digital SAT Linear Functions Practice Questions with Video Explanations

1. Line passes through the point (-2,5) and is perpendicular to the line . Which equations defines line ?

2. The function gives the total amount of money , in dollars, earned by a retail associate who receives a weekly bonus plus an hourly pay rate, where is the number of hours worked.

What does the number 18 represent in this context?

3. A line has slope and passes through the point (8,13). The -coordinate of another point on the line is 20. What is the -coordinate of that point?