Decide what quantities the independent variable (x) and dependent variable (y) should represent.
Draw a graph of the situation.
Write a linear equation describing the situation.
Joe lives 20 miles to the east of a very nice park. He left his home at 1 p.m. and drove east for 3 hours. When he stopped, he was 206 miles away from the park. The birds had finally stopped following him.
x is how long Joe has been driving; y is how far away he is from the park.