1.
Determine which equation represents a function.
A.
x
= 4
B.
x
=
y
2
- 1
C.
y
= -2
x
+ 1
D.
Hint
2.
What is the
x
-intercept of the graph below?
A.
-2
B.
2
C.
-3
D.
3
Hint
3.
Which equation is graphed below?
A.
3
x
-
y
= -6
B.
x
+ 3
y
= 6
C.
x
- 3
y
= -6
D.
3
x
+
y
= 6
Hint
4.
The temperature in degrees Fahrenheit can be expressed by the function
F
(
c
) = 1.8
c
+ 32 where
c
is the temperature in degrees Celsius. Find the temperature in degrees Fahrenheit (to the nearest degree) if it is 18°
C
outside.
A.
20
B.
212
C.
42
D.
64
Hint
5.
Consider the formula
F
(
c
) = 1.8
c
+ 32, where
c
is the temperature in degrees Celsius and
F
(
c
) is the temperature in degrees Fahrenheit. If it is 0°
C
at the beginning of the day, and it is 11° C at noon, what was the change in temperature in degrees Fahrenheit?
A.
-12.2
B.
19.8
C.
11
D.
51.8
Hint