Download Alg 1 Keystone Review Week 8

Name ________________________________
Teacher ____________________Week 8
Class Period __________________________
Due Date _________________________
Complete each of the following questions. Please write the correct letter on the blank for each
multiple choice question.
_____ 1.
_____ 2.
Which graph is symmetric with respect to the y-axis?
A.
B.
C.
D.
Which equation of a line has a slope of 3 and a y-intercept of 2 ?
A. x  3 y  2
B. y  3x  2
2
C. y   x
3
D. y  2 x  3
1
_____ 3. In the accompanying graph, if point P has coordinates (a, b), which point has
coordinates (-b, a)?
A. Point A
B. Point B
C. Point C
D. Point D
_____ 4. In the coordinate plane, the points (2, 2) and (2, 12) are the endpoints of a diameter
of a circle. What is the length of the radius of the circle?
A. 5
B. 6
C. 7
D. 10
_____ 5. A wheel has a radius of five feet. What is the minimum number of complete
revolutions that the wheel must make to roll at least 1,000 feet?
A. 31
B. 32
C. 33
D. 79
2
_____ 6. Delroy’s sailboat has two sails that are similar triangles. The larger sail has sides of
10 feet, 24 feet, and 26 feet. If the shortest side of the smaller sail measures 6 feet,
what is the perimeter of the smaller sail?
A. 15 ft
B. 36 ft
C. 60 ft
D. 100 ft
_____ 7. What is the slope of the line that passes through the points  6,1 and  4, 4  ?
A. 2
B.
2
C. 
1
2
D.
1
2
_____ 8. Melissa is walking around the outside of a building that is in the shape of a regular
polygon. She determines that the measure of one exterior angle of the building is 60
degrees. How many sides does the building have?
A. 3
B. 6
C. 9
D. 12
_____ 9. The line 3x – 2y = 12 has
A. a slope of
3
and a y-intercept of 6
2
B. a slope of 
3
and a y-intercept of 6
2
C. a slope of 3 and a y-intercept of 2
D. a slope of 3 and a y-intercept of 6
3
_____ 10. What is the image of (x, y) after a translation of 3 units right and 7 units down?
A.
 x  3, y  7 
B.
 x  3, y  7 
C.
 x  3, y  7 
D.
 x  3, y  7 
_____ 11. The ratio of two supplementary angles is 2 : 7. What is the measure of the smaller
angle?
A. 10 degrees
B. 14 degrees
C. 20 degrees
D. 40 degrees
_____ 12. Don placed a ladder against the side of his house as shown in the diagram below.
Which equation could be used to find the distance, x, from the foot of the ladder to
the base of the house?
A. x  20 19.5
B. x  202  19.52
C. x  202  19.52
D. x  202  19.52
4
Open-Ended Question:
Last summer Ben purchased materials to build model airplanes and then sold the finished
models. He sold each model for the same amount of money. The table below shows the
relationship between the number of model airplanes sold and the running total of Ben’s profit.
Ben’s Model Airplane Sales
Model
Airplanes
Sold
12
15
20
22
Total Profit
$68
$140
$260
$308
A. Write a linear equation, in slope-intercept form, to represent the amount of Ben’s total profit
(y) based on the number of model airplanes (x) he sold.
y = ______________________________
B. How much did Ben spend on his model-building materials?
$ ______________________________
Continued on next page
5
Continued. Please refer to the previous page for task explanation.
C. What is the fewest number of model airplanes Ben needed to sell in order to make a
profit?
fewest number: ______________________________
D. What is a reasonable value in the range that would be a negative number?
6