1.
The graph of a linear function is _______.
A.
None of these is correct
B.
a horizontal line only
C.
a straight line
D.
a curved line
Hint
2.
Which characteristic describes a graph that is linear and has direct variation.
A.
The graph does not pass through (0, 0).
B.
The equation has the form
y
=
mx
+
b
.
C.
Variables
x
and
y
are not proportional.
D.
The equation has the form
y
=
mx
.
Hint
3.
Find the graph that does not have direct variation.
A.
B.
C.
D.
Hint
4.
Find the equation that contains a decreasing linear relationship.
A.
y
= 12+ 2
x
B.
y
= 5 – 6
x
C.
y
= 10 +
x
D.
y
= 4
x
– 3
Hint
5.
Find the situation that involves a decreasing linear relationship and has direct variation.
A.
A bucket that begins at ground level and is lowered into a well at a rate of 1 foot per second.
B.
A submarine that begins at the bottom of the ocean and is raised to the surface of the water at 15 meters per second.
C.
The temperature that begins at 0°
F
at 6:00 a.m. rises 3°
F
every hour for 6 hours.
D.
An airplane that begins at 20,000 feet and descends for a landing on the ground at the airport.
Hint