ACC Spring Semester 2018 Interim Review

Write an equation for this relationship.

• y=1/5x

• y=1/2x

• y=2x

• y=5x

What is the unit rate (slope) in this proportional relationship?

• 60 miles/1 hour

• 120 miles/ 2 hours

• 1 mile/ 1 hour

What is the constant rate of change (in miles per hour) based on the table?

• 45

• 90

• 135

• 2

Write an equation for this relationship.

• y=18x
• y=18.50x
• y=22.50x
• y=22x

Identify  the slope of the red line.

• 2/3
• 3/2
• -2/3
• -3/2

Triangle DEF and triangle GHI are similar right triangles.  Based on this information, which statement is true?

• The relationship betwen the slope of the hypotenuse of triangle DEF and the slope of the hypotenuse of triangle GHI cannot be determined.
• The slope of the hypotenuse of triangle DEF is greater than the slope of the hypotenuse of triangle GHI.
• The slope of the hypotenuse of triangle DEF is less than the slope of the hypotenuse of triangle GHI.
• The slope of the hypotenuse of triangle DEF is equal to the slope of the hypotenuse of triangle GHI.

Do these triangles have the same slope?

• No, they don't both sit on the line.
• Yes, they both have a slope of -3/2.
• Yes, they both have a slope of -2/3
• No, the orange triangle has a slope of -6/4 and the yellow triangle has a slope of -3/2

A dragon fly can beat its wings 30 times per second. Write an equation in slope-intercept form that shows the relationship between flying time in seconds and the number of times the dragonfly beats its wings. 

• y=30x
• y=x+30
• y=1/30x
• y=2x+7

A balloon is released from the top of a platform that is 50 meters tall. The balloon rises at the rate of 4 meters per second. Write an equation in slope-intercept form that tells the height of the balloon above the ground after a given number of seconds. 

• y=4x+50
• y=50x+4
• y=1/4x+50
• y=1/50x+4

Use the graph to find the slope of the line.  Tell what the slope means in this context. 

• m=.125 ; the diver ascends at a rate of .125 m/s
• m=8 ; the diver ascends at a rate of 8 m/s
• m=.125 ; the diver descends at a rate of .125 m/s
• m=8 ; the diver descends at a rate of 8 m/s