2015_HISD_SNAP3_MAT_G8
1.
The Wolverine Booster Club ordered pizzas for their members to celebrate
their accomplishments. The relationship between the number of pizzas and
the cost of the pizzas can be described linearly as displayed in the table
below.
What is the y-intercept of the relationship in the table above?
Record your answer and fill in the bubbles on your answer document. Be
sure to use the correct place value.
2015_HISD_SNAP3_MAT_G8
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2.
An exterminator charges an initial consultation fee plus a fee per hour to
spray for bugs.
Which table below could represent this scenario given in the graph?
F.
H.
G.
J.
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3.
Examine the set of ordered pairs.
{(-4, 21), (-2, 9), (-1, 3), (1,-9)}
Which of the following shows the correct equation for the function
represented by the ordered pairs?
A.
B.
C.
D.
4.
Mrs. Howell makes and ships monogrammed jackets. The table shows the
relationship between the cost, y, and the number of jackets sold, x.
Which equation best represents the relationship?
F.
G.
H.
J.
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5.
Which statement correctly describes the graph and gives a correct
justification?
The graph isA. a function because for every value of x, there is exactly one value for y
B. not a function because the graph is continuous
C. a function because the graph is discrete
D. not a function because there is at least one x value that is paired with
two y values
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6.
Two representations of the same function are given below:
Representation 1: the equation, y = 30 – 2x.
Representation 2: the graph below.
Which answer choice is another representation of the function?
F. Diana has $30 in her piggy
bank. She spends $2 every
day in the cafeteria on lunch.
H.
G.
J.
2015_HISD_SNAP3_MAT_G8
Diego has 30 marbles in
his collection. He adds five
marbles to his collection
every day.
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7.
Which answer choice below describes a non-proportional relationship?
A. The total fees charged and number of carpeted rooms cleaned if a carpet
cleaning company charges $35 for a consultation fee and $17 for each
room.
B. The total distance traveled and number of hours traveled if John drives
his car at a constant rate of 60 miles per hour for 2 hours.
C. The total earnings and number of hours spent babysitting if Carrie
babysits for 4 hours at a rate of $9 per hour.
D. The total savings and number of weeks spent saving if Justice saves $10
each week for 6 weeks.
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8.
Beverly's task is to show that the slope of a line is the ratio of the change
in y-values to the change in the x-values of any two points on the line. The
steps below are the steps that Beverly used to accomplish her task, but one
step is missing.
1.
2.
3.
4.
5.
6.
7.
8.
What
Draw a line and locate 4 points on the line.
Draw vertical parallel lines through the first and fourth points.
Draw a horizontal line from the third point to the parallel line through
the fourth point.
Draw a horizontal line from the second point to the parallel line
through the first point.
Establish the similar right triangles you just created.
Determine the slope of the line using the rise to run ratio for the
triangle containing the first and second points.
?
Compare the two rise to run ratios to the ratios of corresponding
sides of similar triangles to see that they are equal which is the
slope
could be the missing step?
F. Determine the ratio of the hypotenuse to a leg in each triangle.
G. Find the run to rise ratios for the two triangles and see if they are equal,
which would mean the slope was equal to this ratio.
H. Determine the slope of the line using the rise to run ratio for the triangle
containing the third and fourth points.
J.
Not Here
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9.
Marty read a book at a constant rate. Her progress is shown on the graph.
Which statement below is a true statement?
A. The slope of the line is different from the unit rate of
minute.
page per
B. The slope of the line is different from the unit rate of
minute.
page per
C. The slope of the line is the same as the unit rate of
page per minute.
D. The slope of the line is the same as the unit rate of
page per minute.
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10. Which scenario best matches the proportional relationship for Line h?
F. A grocery store sells chips at the price of 10 bags for $5.
G. Gail can buy 5 pencils for $15.
H. Every 10 days, a deposit of $50 is put into a savings account.
J.
Ben can run a mile in eight minutes.
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11. A discount book store has a one-day sale on all children's books. In order to
purchase from the store, each customer must have a yearly subscription.
How much does the book store charge for an annual membership?
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. A coin collection contains nickels and quarters. The ratio of nickels to
quarters is 2:1. This relationship is modeled by
represents this relationship?
F.
H.
G.
J.
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. Which graph best
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13. Rogelio graphs line m on the coordinate plane.
Which of the following equations best represents the line Rogelio graphs?
A.
B.
C.
D.
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14. The grade a student makes on a test varies directly with the number of
correct answers. Kim made a 90 on a test with 60 questions. How many
questions must Brett answer correctly in order to get a higher score than
Kim?
F. 19
G. 54
H. 57
J.
90
15. Examine triangle MNO
shown below.
What is the measure, in degrees, of angle MNP?
Record your answer and fill in the bubbles on your answer document. Be
sure to use the correct place value.
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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