IAAT - Iowa Algebra Aptitude Graph and Table Analysis Questions and Answers

Question 1

The line graph below shows the temperature in a city over a 12-hour period. During which two-hour interval did the temperature increase at the highest rate?

[A line graph shows 'City Temperature'. The x-axis is 'Time of Day' from 6 AM to 6 PM in 2-hour increments. The y-axis is 'Temperature (°F)' from 40 to 70. The data points are: 6 AM at 45°F, 8 AM at 50°F, 10 AM at 60°F, 12 PM at 65°F, 2 PM at 68°F, 4 PM at 67°F, 6 PM at 62°F.]

Accepted Answer

8 AM to 10 AM

Answer

6 AM to 8 AM

Answer

12 PM to 2 PM

Answer

4 PM to 6 PM

Question 2

A community garden tracks the growth of a sunflower. The table below shows the height of the sunflower at the end of each week. If the pattern of growth continues, what will be the height of the sunflower at the end of Week 6?

| Week (W) | Height (cm) |
|---|---|
| 1 | 15 |
| 2 | 21 |
| 3 | 27 |
| 4 | 33 |

Accepted Answer

45 cm

Answer

39 cm

Answer

42 cm

Answer

36 cm

Question 3

A survey asked 300 middle school students to name their favorite after-school club. The results are displayed in the pie chart below. How many more students chose the Sports club than the Art club?

[A pie chart titled 'Favorite After-School Club' is shown with the following percentages: Sports 40%, Music 25%, Art 20%, Drama 15%.]

Accepted Answer

60

Answer

120

Answer

20

Question 4

The scatter plot below shows the relationship between the number of hours a student sleeps the night before a test and their score on the test. A line of best fit is drawn. Based on the line of best fit, what is the best prediction for the score of a student who sleeps for 8 hours?

[A scatter plot shows 'Test Score vs. Hours of Sleep'. The x-axis is 'Hours of Sleep' from 4 to 10. The y-axis is 'Test Score' from 50 to 100. Data points show a positive correlation. A line of best fit passes through approximately (5, 65) and (9, 85).]

Accepted Answer

80

Answer

70

Answer

95

Answer

60

Question 5

A company sells two products, Gadgets and Widgets. The bar chart shows the number of units sold for each product in a month, and the table shows the profit per unit. Which statement is best supported by the data?

[A bar chart shows 'Units Sold'. For 'Gadgets', the bar reaches 150. For 'Widgets', the bar reaches 200.]

| Product | Profit per Unit |
|---|---|
| Gadget | $8 |
| Widget | $5 |

Accepted Answer

The company made more profit from Gadgets than from Widgets.

Answer

The company sold more Gadgets than Widgets.

Answer

The total profit from Widgets was greater than the total profit from Gadgets.

Answer

The profit from Gadgets and Widgets was equal.

Question 6

The table below shows the cost for a plumbing service based on the number of hours worked. Which equation represents the relationship between the total cost (C) and the number of hours worked (h)?

| Hours (h) | Total Cost (C) |
|---|---|
| 1 | $110 |
| 2 | $170 |
| 3 | $230 |
| 4 | $290 |

Accepted Answer

C = 60h + 50

Answer

C = 110h

Answer

C = 50h + 50

Answer

C = 110h + 60