Download Revision second term G8

G8 second term revision
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
____
1. Solve
.
a. no solution
b. infinitely many solutions
2. Which ordered pair is a solution to this system of equations?
a.
b.
____
c. (–2, –3)
d. (–2, 10)
5. Solve the system of equations.by substitutions
a. (–7, 0)
b. (–1, 0)
____
c. (3, 6)
d. (15, 3)
4. Solve the system of equations.by substitutions
a. (–3, –2)
b. (10, –3)
____
c.
d.
3. Solve the system of equations.by substitutions
a. (3, 15)
b. (7, 15)
____
c.
d.
c. (0, –1)
d. (–1, 15)
6. Solve the system by graphing.
1
y
5
4
3
2
1
–5
–4
–3
–2
–1
–1
1
2
3
4
5
x
–2
–3
–4
–5
a. (8, –3)
b. (–1, 1)
____
c. (–1, –3)
d. (–3, –1)
7. Solve the system by graphing.
y
5
4
3
2
1
–5
–4
–3
–2
–1
–1
1
2
3
4
5
x
–2
–3
–4
–5
a. (–5, –1)
b. (–10, –5)
____
c. (–1, –5)
d. (–1, 3)
8. Solve the system of equations.
a.
b.
c.
d.
2
____
9. Solve the system of equations.
a.
b.
c.
d.
____ 10. Solve the system of equations by elmnations .
a.
b.
c.
d.
____ 11. Which is NOT a function?
a.
b.
c.
d.
____ 12. Which graph is NOT that of a function?
a.
c.
b.
d.
____ 13. Determine if the relation represents a function.
x
y
0
0
1
2
–4
–1
2
6
a. The relation is not a function.
b. The relation is a function.
____ 14. Determine if the relation represents a function.
x
y
0
0
1
2
–5
–1
1
6
3
a. The relation is not a function.
b. The relation is a function.
____ 15. Determine if the relation represents a function.
x
y
0
0
1
1
–5
–2
3
5
a. The relation is a function.
b. The relation is not a function.
____ 16. Graph the linear function y = – 1.
y
5
4
3
2
1
–5
–4
–3
–2
–1
–1
1
2
3
4
5
x
–2
–3
–4
–5
y
8
4
–8
–4
4
8
x
–4
–8
4
a.
c.
y
y
8
8
4
4
(–2, 1) (0, 1) (2, 1)
(–2, –1) (0, –1) (2, –1)
–8
–4
4
x
8
–8
–4
–4
–4
–8
–8
b.
d.
y
4
8
x
4
8
x
y
8
8
(–2, 5)
(–2, 3)
4
4
(0, 1)
(0, –1)
–8
–4
4
x
8
–8
(2, –5)
–4
–8
____ 17. Graph the linear function y = 2x – 4.
y
5
4
3
2
1
–4
–3
–2
–1
–1
1
(2, –3)
–4
–8
–5
–4
2
3
4
5
x
–2
–3
–4
–5
5
y
8
4
–8
–4
4
x
8
–4
–8
a.
c.
y
y
(2, 8)
8
8
(0, 4)
4
4
(–2, 0)
–8
–4
4
8
x
–8
(2, 4–2)
–4
8
x
8
x
(0, –4)
–4
(–2, –6)
–8
b.
–4
–8
d.
y
y
8
8
(2, 6)
(0, 4)
(–2, 2)
4
4
(2, 0)
–8
–4
4
8
x
–8
–4
4
(0, –4)
–4
–4
(–2, –8)
–8
6
–8
____ 18. Write a rule for the linear function.
y
8
7
6
5
4
3
2
1
–8 –7 –6 –5 –4 –3 –2 –1
–1
–2
–3
–4
–5
–6
–7
–8
1 2 3 4 5 6 7 8
x
a. f(x) = 5x2 + 4
b. f(x) = 5x + 4
c. f(x) = 5x – 4
d. f(x) = 5x – 4
____ 19. Write a rule for the linear function.
y
8
7
6
5
4
3
2
1
–8 –7 –6 –5 –4 –3 –2 –1
–1
–2
–3
–4
–5
–6
–7
–8
1 2 3 4 5 6 7 8
x
a. f(x) =  32 x + 5
c. f(x) =  32 x2 – 5
b. f(x) = 32 x – 5
d. f(x) = 32 x + 5
____ 20. Find an ordered pair that satisfies the function
a. (0, 3)
c. (1, 3)
b.
6)
d.
–6)
____ 21. Find an ordered pair that satisfies the function
a.
14)
c.
–14)
b. (1, 10)
d. (0, 10)
7
.
.
____ 22. Find the slope of the line that passes through (1, 2) and (2, 4).
a. 2
c. 1
b.
d.
____ 23. What type of relationship is shown by the scatter plot?
a. positive correlation
b. negative correlation
c. constant correlation
d. no correlation
Short Answer
1. Graph the functions
and
using tables with x-values
Describe the differences in the graphs.
y
5
4
3
2
1
–5
–4
–3
–2
–1
–1
1
2
3
4
5
x
–2
–3
–4
–5
8
G8 second semester exam
Answer Section
MULTIPLE CHOICE
1. ANS: A
2. ANS: C
3. ANS: A
4. ANS: C
5. ANS: B
6. ANS: C
7. ANS: C
8. ANS: C
9. ANS: C
10. ANS: C
11. ANS: C
12. ANS: B
13. ANS: A
14. ANS: A
15. ANS: B
16. ANS: C
17. ANS: D
18. ANS: C
19. ANS: A
20. ANS: D
21. ANS: C
22. ANS: A
23. ANS: A
9
SHORT ANSWER
1. ANS:
The graph of
upward.
opens downward, while the graph of
10
opens