SAT Math: Data Analysis - Common Graphs & Reading Them

Lesson: Common Graphs & How to Read Them

After you watch the lesson above, try this practice problem

The speeds of two cars starting at different initial speeds are represented in the graph above. From initial time (t = 0) to final time (t = 10), the drivers press their gas pedals to the floor. The speed of each car was measured every second, and the values were plotted on the graph. The result was two smooth curves representing the change in speed of each car. Which of the following is a correct statement about the data above?

At time $t = 0$ , both cars reach their max speeds.

At time $t = 0$ , Car 1 travels twice as fast as Car 2.

At time $t = 0$ , Car 2 travels twice as fast as Car 1.

For the full ten seconds, the speed of Car 1 is increasing at a higher average rate than the speed of Car 2.

Try this practice problem

A gardener plants two different plants that each reach a maximum height of 10 inches. After the initial planting of the plants (t = 0), the gardener measures and records the height of each plant every week. The data for each plant were fit by a smooth curve, as shown above, where each curve represents the height of each plant as a function of time in weeks. Which of the following is a correct statement about the data above?

At time $t = 0$ , both plants reach their max height

At time $t = 0$ , Plant 1 is 50% taller than Plant 2

At time $t = 0$ , both plants are 10% of their max height

For the first week, the height of Plant 2 is increasing at a higher average rate than the height of Plant 1.

Note: Do not move on until the activity above has been completed and submitted.

SAT Math: Data Analysis – Common Graphs & Reading Them

Lesson: Common Graphs & How to Read Them