Algebra Test 2

What is the y-intercept in the equation y= -2x + 5

• -2
• 3
• 5
• Cannot be Determined

What is the y-intercept?

• -21
• -17
• 1/4
• 4

Jeremy turns on his GPS watch after walking 50 feet from his house. He continues walking away from his house at 3 feet per second in the same direction. Write an equation that expresses Jeremy’s distance, since he turned on his GPS watch.

• d=3t

• d=50t

• d=3t+50

• d=50t+3

Javier is planning on driving from Chicago to Minneapolis, a distance of 405 miles. He knows that the average speed for this trip can range from 45 mph to 60 mph. He makes a graph that represents the trip for the range of speeds.

• d=405+45h

• d=405+60h

• d=405−45h

• d=405−60h

Genevieve drinks between 8 and 10 cups of water a day. She buys a 5-gallon (80-cup) jug of water. The graph shows the number of cups of water left in the jug as she drinks. Write an inequality for the number of cups of water remaining after five days.

• 0 ≤ c ≤ 80

• 8 ≤ c ≤ 10

• 40 ≤ c ≤ 50

• 30 ≤ c ≤ 40

A biker is returning home on a 70-mile trip. She is able to average between 14 mph and 20 mph. The graph shows possible times for completing the trip.

If the biker starts riding at 6:00 a.m., between what times can her family expect her to arrive at home?

• between 3:30 a.m. and 5:00 a.m.

• between 9:30 a.m. and 11:00 a.m.

• between 3:30 p.m. and 5:00 p.m.

• between 9:30 p.m. and 11:00 p.m.

Laney is driving away from Houston. Which equation expresses Laney’s distance from Houston that she has driven?

• d=10h+60

• h=10d+60

• d=60h+10

• h=60d+10

A 100-pound bag of sand is leaking at a rate of 0.25 pounds per second. The function W(t)=100−0.25t expresses the weight of the bag, W(t), as a function of the number of seconds, t. What does W(200) represent in terms of the problem?

• The bag of sand weighs 400 pounds after 200 seconds.

• The bag of sand weighs 200 pounds after 50 seconds.

• The bag of sand weighs 200 pounds after 400 seconds.

• The bag of sand weighs 50 pounds after 200 seconds.

Kamala and Jocelyn both start climbing a cliff from the bottom at the same time. Kamala climbs up the cliff wall at a constant rate of 15 feet per minute. Jocelyn climbs up the cliff wall at a constant rate of 10 feet per minute.

Graph the equations that represent the heights h

h that both have climbed, as a function of the time t

t in minutes

• graph on extra paper

• do not click this

What is the solution to the systems?

2x−3y=7

x+4y=9

• (0,0)

• (5,1)

• (11,5)

• (2,1)