31)
31)
The graph shows the enrollment at Riverside Community College for selected years. Use
the coordinates of the given points to find the slope of the line. Interpret the meaning of
the slope in the context of this problem
A)
m = -175; Enrollment decreases by approximately 175 students per year.
B)
m = -350; Enrollment decreases by approximately 350 students per year.
C)
m = -350; Enrollment decreases by an approximate factor of 350 students per year.
D)
m = -175; Enrollment decreases by an approximate factor of 175 students per year.
32)
32)
Two points are given from each of two lines L
and L
. Without graphing the points,
1
2
determine if the lines are perpendicular, parallel, or neither.
L
: (-9, -21) and (1, -1)
1
L
: (-8, 10) and (8, -6)
2
A)
B)
C)
Perpendicular
Neither
Parallel
33)
33)
The slope of a line is given. Find the slope of a line perpendicular to the given line.
19
m =
23
23
23
19
19
A)
B)
C)
D)
-
-
19
19
23
23
13