9.1 through 9.4 Review
Name:_______________________
Date:______________ Period:____
Sections 9-1 to 9-2
1.)
2.)
3.)
4.)
5.)
Section 9-3
6.) f(x) =
4x  1
2x  3
HA:
Holes:
VA:
7.) f(x) =
x2  9
x3  3x 2
HA:
Holes:
VA:
8.) f(x) =
x3  x
x 1
HA:
Holes:
VA:
9.) Graph the function f(x) =
Holes:
x3
x  5x  6
2
x
y
VA:
HA:
Section 9-4
10.) If y varies jointly as x and z and y = 12 when x = -2, z = 3, find y when x = 4 and z = -1.
11.) The volume V of a gas varies inversely as its pressure P. If V = 80 cubic centimeters when
P = 2000 millimeters of mercury, find V when P = 320 millimeters of mercury.
12.) The length S that a spring will stretch varies directly with the weight F that is attached to
the spring. If a spring stretches 20 inches with 20lbs attached, how far will it stretch with 15lbs attached?