2015_HISD_SNAP2_MAT_G8
1.
Sasha and her three friends start a babysitting company. Each young lady
charges a different rate based on their experience.
Which table represents the young lady who earns the highest wage per
hour?
A.
C.
B.
D.
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2.
The number of math problems, p, that Josh solves varies directly with the
number of minutes, m, it takes for him to solve them. Josh solves 5 math
problems every 3 minutes. Which equation below represents the relationship
between p and m?
F.
G.
H.
J.
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3.
4.
Which answer choice below does NOT suggest a linear relationship?
A.
C.
B.
D.
A chef is filling one sink with water while emptying another. The first sink is
empty and is being filled at a rate of 4 gallons per minute. The second sink is
full and is being drained at a rate of 2 gallons per minute. Both sinks hold 24
gallons of water. How many minutes will it take the two sinks to contain the
same amount of water?
F. 2 minutes
G. 4 minutes
H. 6 minutes
J.
16 minutes
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5.
Oliver orders a set of four numbers from least to greatest. The smallest
number he orders is
, and the largest is
. Which answer choice
provides two possible numbers that could be contained in Oliver’s set?
A.
B.
C.
8.7 and
and 8.7
8.05 and
D. 8.1 and 8.5
6.
A line that passes through the points (x, 4) and (6, −1) has a slope of
. What value of x will yield the given slope and what is the equation of the
line, in slope-intercept form, that passes through the points?
F.
G.
H.
J.
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7.
Look at the table of values for a linear function shown below.
X
-2
0
3
Y
-11
-3
9
What is the slope and y-intercept of the function?
A. The slope is 4. The y-intercept is (0,0).
B.
The slope is
. The y-intercept is (0,-3).
C. The slope is 4. The y-intercept is (0,-3).
D.
The slope is
2015_HISD_SNAP2_MAT_G8
. The y-intercept is (0,0).
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8.
Examine the scatterplot below.
What type of relationship does the data in the scatterplot suggest?
F. The data suggest a linear relationship with a positive correlation.
G. The data suggest a non-linear relationship with a positive correlation.
H. The data suggest a linear relationship with a negative correlation.
J.
Not here
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9.
In math class, Toby randomly selects the math tiles shown below.
Toby's teacher instructs him to arrange the tiles in ascending order. Which
tile should Toby place first in his arrangement?
A.
B.
C.
D.
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10. The temperature at time x = 0, in Nome, Alaska is -10°C. Every three hours,
the temperature decreases by two degrees, as displayed in the table below.
Which equation represents the data in the table?
F.
G.
H.
J.
11.
A cab ride in New York City costs $3 plus $0.36 for every
of a mile.
What is the slope, in dollars per mile, for the cost of a cab ride? Round your
answer to the nearest hundredths.
Record your answer, and fill in the bubbles on your answer document. Be
sure to use the correct place value.
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12. Examine the table of values below.
Which graph correctly displays the solution to the system of equations
represented in the table?
F.
H.
G.
J.
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13. A swimming pool is filled with water at a constant rate of 9 gallons every 10
minutes. After 30 minutes, the pool is filled with 55 gallons of water. Which
equation below represents this relationship?
A.
B.
C.
D.
14. The amount of stain needed to cover a wooden surface is directly
proportional to the area of the surface. If 3 pints are required to cover
a square deck with a side length of 7 feet, how many pints of stain are
needed to paint a square deck with a side length of 10 feet 6 inches?
Record your answer, and fill in the bubbles on your answer document. Be
sure to use the correct place value
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15. The mapping diagram below defines the relationship between a set of inputs
and a set of outputs.
What is the slope and the y-intercept of the function that represents this
relationship?
A.
B.
C.
D.
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16. The tables below represent the distance four cars travel over time.
Based on the information given, which list correctly ranks the cars from
slowest to fastest?
F. Y, Z, W, X
G. X, W, Z, Y
H. Z, W, X, Y
J.
W, X, Y, Z
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17. Jorge rents a bicycle from ABC Cycles for a few hours. The banner displayed
below hangs in the window of the shop.
The relationship between the number of hours a bike is rented and the total
cost isA. Non-proportional: the cost does not increase by the same amount each
time.
B. Proportional: the graph of the line representing the cost to rent a bike
per hour would pass through the origin.
C. Non-proportional: the graph of the line representing the cost to rent a
bike per hour would not pass through the origin.
D. Proportional: the cost does not increase by the same amount each time.
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STAAR
STAAR GRADE 8 MATHEMATICS
REFERENCE MATERIALS
®
State of Texas
Assessments of
Academic Readiness
LINEAR EQUATIONS
Slope-intercept form
y = mx + b
Direct variation
y = kx
Slope of a line
m =
y2 − y1
x2 − x1
CIRCUMFERENCE
Circle
C = 2π r
or
C = πd
AREA
Triangle
A = 1 bh
2
Rectangle or parallelogram
A = bh
Trapezoid
A = 1 (b1 + b2)h
2
Circle
A = πr 2
SURFACE AREA
Lateral
Total
Prism
S = Ph
S = Ph + 2B
Cylinder
S = 2π rh
S = 2π rh + 2π r 2
VOLUME
Prism or cylinder
V = Bh
Pyramid or cone
V = 1 Bh
3
Sphere
V = 4 πr 3
3
ADDITIONAL INFORMATION
Pythagorean theorem
a2 + b 2 = c 2
Simple interest
I = P rt
Compound interest
A = P (1 + r )t