Lines and the Coordinate Plane: Slope of a Line

Think & Click: Problem Solving with Slope

Now, you try. Complete the Think & Click activity by looking at each problem below, thinking about it, and then clicking on the question to reveal the solution.

Find the rate of change between the two points: (6, 2) and (3, -3) where x is in minutes and y is in feet.

m equals negative 3 minus 2 divided by 3 minus 3, m equals negative 5 divided by negative 3, m is approximately equals to 1.67

The rate of change is approximately 1.67 feet per minute.

Suppose that the population of a city in 1960 was 52,100. In 2005, the population was 32,000. Find the rate of decrease.

m equals 32000 minus 52100 divided by 2005 minus 1960, m equals negative 20100 divided by 45, m is approximately equal to -447

The population decreased by approximately 447 people per year.

Find the rate of change between two points: (5, -3) and (-3, 1) where x is time is in seconds and y is in volts

m equals negative 3 minus 1 the group divided by the group 5 minus negative 1

Review Worksheet

Complete the review worksheet for this section before taking the quiz. Download the review worksheet, complete the questions, and then download the answer key to check your work. Make sure to ask your teacher any questions.