2024 STAAR Category 2: Describing and Graphing Linear Functions

The altitude of an airplane is changing at a constant rate. The table shows the linear relationship between y, the altitude of the airplane in feet, and x, the time in minutes.

Complete the statement that describes the rate of change of the altitude of the airplane with respect to time.

Choose the correct answer from each drop-down menu to complete the sentence.

The altitude of the airplane ​ ​ (a)   at a rate of ​ (b)   feet per minute.

• decreases
• 3,000
• increases
• 2,000
• 5,250
• 8,250

The graph of a linear function is shown on the grid.

What value best represents the y-intercept of the line?

• less steep than
• steeper than
• greater than
• less than
• the same as

Tags

A.3(E)

A counselor asked college students who had jobs how many hours they worked each week. The counselor then compared the number of hours each student worked and the student's overall grade average. The table shows the data.

Based on the correlation coefficient for the data, what type of linear association exists between hours worked and overall grade average?

• Strong negative

• Weak negative

• Weak positive

• Strong positive

Tags

A.4(A)

Which situation best represents association but NOT causation?

• When the number of spectators at a football game increases, the number of wins for the home team increases.

• When more gallons of water are put into an aquarium, the weight of the aquarium increases.

• When the amount of time an athlete runs increases, the distance she runs increases.

• When the charge of a cell phone battery increases, the number of minutes the phone can be used increases.

Tags

A.4(B)

• 
• 
• 
• 

• The system has no solutions.

• The system has exactly one solution.

• The system has exactly two solutions.

• The system has infinitely many solutions.

Two hikers begin hiking at the same time from different locations on a trail. The system of equations graphed on the grid represents this situation.

Which value best represents the number of hours the two hikers have been hiking when they are the same distance from the start of the trail?

• 2.8h

• 1.3h

• 2.5h

• 4.5h