Unit 2 Part 2
Extra Practice for Reassessment
1.
Which of the following are proportional linear situations?
I.
𝑦 =
3
2 𝑥 + 2
II.
The graph of the function contains the points (-1, 3.5) ,
(0, 2) and (3, -2.5)
2.
Explain if each situation is proportional or non-proportional?
A.
Shari charges $7 per hour for babysitting plus $5 travel fee to cover gas, 𝑐 = 7ℎ + 5
B.
D.
3.
The cost of a plumbing repair includes a $50 fee plus a cost of
$15 per hour as shown in the table below.
What is the slope?
Write and equation for the situation.
III.
Hours worked
2
5
8
Cost of repair in dollars
80
125
170

4.
Write the equation of each line. Which one is a direct variation?
A.
C.
B.
D.
5.
Which ordered pair will satisfy both linear equations shown below? 𝒚 = −𝟐𝒙 + 𝟓 𝒚 = 𝒙 − 𝟏
A.
(2,1)
B.
(1,2)
C.
(2,9)
D.
(-2,1)
6.
The amount a hotel charges guests for video games varies directly with the number of games rented. A hotel charges $19.75 a day to rent 5 video games. At this rate, which equation can be used to determine c , the total cost for renting 9 video games at this hotel?
A.
𝑐 =
19.75
(9)
5
B.
𝑐 =
5
19.75
(9)
C.
𝑐 =
23.70
(9)
5
D.
𝑐 =
5
23.70
(9)

7.
8.
9.