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14 questions
Suppose y varies directly with x. If y=3 when x=10.5, what is y when x=63?
y = 18
y = 55.5
y = 221
y = 3.5
The cost of apples varies directly with the number of pounds purchased. Using the table, find the unit price.
$3.36/pound
$\frac{25}{42}$ apples/dollar
$\frac{3}{5}$ apple/pound
$1.68/pound
Marcus runs 5.6 miles every two days. Which proportion or equation below could be used to solve for the number of miles he would run in eleven days?
$\frac{5.6}{2}=11x$
$\frac{2}{5.6}=\frac{11}{x}$
$y=5.6x$
$k=\frac{5.6}{2}$
Based on this graph, which of the following are true? Select all that apply.
This graph is a proportional relationship because it is linear and reaches (0,0).
The unit rate is 10 meters per second.
The direct variation equation is y = 10x.
According to this graph, the object would travel 60 meters in 60 seconds.
If Craig buys 4 umbrellas for $50.36, what is the unit price?
$50.36
y=50.36x
$12.59
0.08 umbrellas/dollar
y=12.59x
Y varies directly with x.
When y = -27, x = $4\frac{1}{2}$ .
What is x when y = -18?
x = 13.5
x = -108
x = 1.5
x = 3
EQUATIONS REVIEW!
Solve for x.
3x - 15 = 8x + 5
x = $\frac{-10}{11}$
x = $-4$
x = $-0.25$
x = $\frac{20}{11}$
Casey made $171.50 for 14 hours of work last week. This week she earned $98. How many hours did she work this week if she was paid the same rate both weeks?
12.25 hours
8 hours
7 hours
1.75 hours
EQUATIONS REVIEW!
Solve for n:
$-12-5n=-20n-3$
$n=\frac{3}{5}$
$n=-1$
None of these are true
$n=-\frac{5}{3}$
$n=1$
Sheryl walks at a steady pace. Which equation represents her total time spent walking depending on the number of miles she walks at that pace?
y = x + 13
k = 65/5
y = 13x
y = $\frac{39}{3}=\frac{52}{4}=\frac{65}{5}$
Are you required to put units on an answer representing a unit rate?
YES
NO
Only on your birthday.
Only on Mrs. Harbin's birthday.
Are you required to show how to set up the work for a problem even though a calculator is allowed to help you multiply and divide more easily?
YES
NO
Only if you are in 2nd period.
Only if you are in 3rd period.
Only if you are in 4th period.
The variable "k" in the equation "y=kx" represents which of the following?
The constant of proportionality
The unit rate
The 11th value in a sequence of numbers
The ratio of $\frac{y}{x}$ in proportional relationships
Sonny has read 40 pages in 30 minutes. Troy has read 30 pages of the same book in 20 minutes. Are they reading at the same speed?
Yes, because Troy read 10 less pages in 10 less minutes.
No, because Sonny is reading faster than Troy.
No, because Troy is reading faster than Sonny.
Yes, because Sonny and Troy both have a 100 average which means they read at the same speed.
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