1.
What is true about the graphs of
y
= 2
x
2
and
y
= -2
x
2
?
A.
y
= 2
x
2
opens to the left and
y
= -2
x
2
opens to the right.
B.
y
= 2
x
2
opens downward and
y
= -2
x
2
opens upward.
C.
y
= 2
x
2
opens to the right and
y
= -2
x
2
opens to the left.
D.
y
= 2
x
2
opens upward and
y
= -2
x
2
opens downward.
Hint
2.
Which is the graph of the equation
y
= 2
x
2
- 1?
A.
B.
C.
D.
Hint
3.
Find the graph of
.
A.
B.
C.
D.
Hint
4.
The currency in Poland is the zloty. On a particular day in October 2001, Cindy wanted to exchange $20 for zloty. The rule for converting zloty to U.S. dollars was
D
= 0.244Z, where
D
was the price in U.S. dollars and
Z
was the price in zloty. How much money, in Polish zloty, did Cindy receive? Use the graph below to help you.
A.
75 zloty
B.
82 zloty
C.
90 zloty
D.
63 zloty
Hint
5.
What is the form of an equation for a doubling pattern?
A.
y
=
x
2
B.
y
= 2
x
C.
y
=
x
+ 2
D.
2
y
=
x
Hint