Refresher Course Math 1050 and 1060 Practice Problems Set 3 Fall 2007
1.) Complete the ordered pair (
7) for the equation y
,
7 Z9
=
2x —9.
7J7
I_-x
2.) Find an equation of a line with sb
e 3 and y-intercept (0,-5).
ZZE7
3.) Find the equation of the line through the points (3,4) and (5,-6). Write the equation in
slope-intercept form.
skre
yob
)OUfr
y-i’3
HS
4.) Find the sbopof the line 4x+5y=l0.
y
5
=
-
J2i
—
c/)(+IO
y
$1op
5.) Find the slope-intercept form of the equation of the line that passes through the point
(2,-I) and is parallel to the line 2x—3y = 5.
(‘I
)
(C)f
7
6
y t
3
6.) During 2000, Nike’s net sales were $9.0 billion, and in 2001 net sales were $9.5
billion. Write a linear equation giving the net sales y in terms of the year x. Then use the
equation to predict the net sales for 2002.
*J1E
y
?
Iii €
-
/
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/1
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Refresher Course Math 1050 and 1060 Practice Problems Set 3 Fall 2007
7.) Does the equation y
3 + 6x —1
=
4 represent a function?
Ye5/
‘‘
3
—-
5
°
V.
—
8.) Does the equation y
4
—
7x + 5
=
7
7
12 represent a function?
x
-
(
o.
!
9.) Let f(x)
a.) f(—3)
=
c.)
=
2
3x
—
2x. Find each of the following:
/
b.) f(t)
6
Z7+
f(x+h)
/z
,‘
—
f(x)
-
3XL+L
3L
L
h
—
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/
Refresher Course Math 1050 and 1060 Practice Problems Set 3 Fall 2007
—5x+6 x—3
1
10.) Example: Let f(x)=
2
+2
a.) f(—4)
x>—3
Find
b.) f(—3)
c.) f(6)
ELLI
Example: Use the graph of the functionf given below to answer the following questions.
a.) domain
L 5, s I
I
—
b.) range
4
3
c.) f(-2)
2
d.) f(0)=0
x
-4
-2
-3
-1
5
e.) f(x)=4 whenx=?
f.) decreasing
iZL)
-4
g.) increasing
(-/-) U
(- H)
h.) relative max
i.) relative mill
-)
11.) Determine whether the function is even, odd, or neither.
a.) f(x)=x
—5
3
c.) f(x)
=
3
x
—
b.) f(x)=x
-f-2x—3
2
5x
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