Use the graph of f to solve.
213)
Find f(–2)
213)
A)
0.4
B)
–4.5
C)
4.5
D)
–0.4
Find the slope of the line that goes through the given points.
214)
(–7, –3), (–7, –9)
214)
A)
0
B)
–3
7
C)
6
7
D)
Undefined
Find the requested value.
215)
f(x) =5x2– 6x + 6, g(x) =7x – 8
Find f(3) + g(3).
215)
A)
88
B)
72
C)
–44
D)
46
98
C
Find the slope.
216)
Find the slope of a line perpendicular to the line y = – 3.
216)
A)
0
B)
undefined
C)
–1
3
D)
–3
Find the indicated function value.
217)
f(x) =3x2– 5, g(x) =2x2–4
Find (f + g)(2).
217)
A)
19
B)
7
C)
3
D)
11
Write the point–slope form of the line satisfying the conditions. Then use the point–slope form of the equation to write
the slope–intercept form of the equation in function notation.
218)
Slope = – 6, passing through (5, 3)
218)
A)
f(x) = – 1
6x –11
2
B)
f(x) = – 6x + 33
C)
f(x) =6x – 33
D)
f(x) = – 6x – 33
Find the domain of the function.
219)
f(x) =1
x – 3 +4
x + 6
219)
A)
( , –6) or (–6, 3) or (3, )
B)
( , –3) or (–3, 6) or (6, )
C)
( , )
D)
( , –6) or (3, )
B
Find the slope of the line.
220)
220)
A)
0
B)
7
C)
5
D)
undefined
Solve the problem.
221)
The total cost in dollars for a certain company to produce x empty jars to be used by a jelly
producer is given by the polynomial equation C(x) =0.7x +27,000. Find C(70,000). Describe what
this means in terms of the variables of the equation.
221)
A)
$27.70; The cost of producing 70,000 jars was $27.70.
B)
$70,027; The cost of producing 70,000 jars was $70,027.
C)
$49,000; The cost of producing 70,000 jars was $49,000.
D)
$76,000; The cost of producing 70,000 jars was $76,000.
Use the vertical line test to determine whether or not the graph is a graph of a function.
222)
222)
A)
function
B)
not a function
Use the given conditions to write an equation for the line in slope–intercept form.
223)
Passing through (4, –2) and parallel to the line whose equation is 8x + y =6.
223)
A)
y = – 8x + 30
B)
y =8x – 30
C)
y = – 1
8x –15
4
D)
y = – 8x – 30
Find the slope.
224)
Find the slope of a line perpendicular to the line x =2.
224)
A)
undefined
B)
1
2
C)
0
D)
2
Use the graph to find the indicated function value.
225)
y = f(x). Find f(–2)
225)
A)
5
B)
–2
C)
1.25
D)
2
Use the vertical line test to determine whether or not the graph is a graph of a function.
226)
226)
A)
function
B)
not a function
Solve.
227)
A vendor has learned that, by pricing carmel apples at $1.75, sales will reach 115 carmel apples per
day. Raising the price to $2.25 will cause the sales to fall to 93 carmel apples per day. Let y be the
number of carmel apples the vendor sells at x dollars each. Write a linear equation that models the
number of carmel apples sold per day when the price is x dollars each.
227)
A)
y =44x + 38
B)
y = – 44x +192
C)
y = – 44x –192
D)
y = – 1
44 x +20233
176
228)
When making a telephone call using a calling card, a call lasting 4 minutes cost $1.30. A call lasting
12 minutes cost $2.90. Let y be the cost of making a call lasting x minutes using a calling card.
Write a linear equation that models the cost of a making a call lasting x minutes.
228)
A)
y =5x –187
10
B)
y =0.2x – 9.1
C)
y = – 0.2x +2.1
D)
y =0.2x +0.5
Find the slope and the y–intercept of the line.
229)
5x + y – 7 = 0
229)
A)
m = – 5; b =7
B)
m =5
7; b =1
7
C)
m = – 1
5; b =7
5
D)
m =5; b =7
103
Solve the problem.
230)
The graph shows that the cost of the average college mathematics textbook has been rising steadily
since 2000.
Average Cost of a College
Mathematics Textbook
Cost
(dollars)
Years since 2000
Predict the cost of an average college mathematics textbook in year 2036.
230)
A)
$370
B)
$170
C)
$492
D)
$262
Use the slope and y–intercept to graph the linear function.
231)
f(x) =2x – 2
231)
104
A)
B)
C)
D)
Use the vertical line test to determine whether or not the graph is a graph of a function.
232)
232)
A)
function
B)
not a function
Find the indicated function value.
233)
f(x) =2x + 4, g(x) =2x2–1
Find (f + g)(3).
233)
A)
24
B)
27
C)
29
D)
23
Graph the equation in the rectangular coordinate system.
234)
–3x – 7 =17
234)
A)
B)
C)
D)
Find the slope of the line that goes through the given points.
235)
(3, –4) and ( 4
5, –1)
235)
A)
11
15
B)
–15
11
C)
–11
15
D)
25
11
Use the slope and y–intercept to graph the linear function.
236)
f(x) =1
4x
236)
A)
B)
107
C)
D)
Write the point–slope form of the line satisfying the conditions. Then use the point–slope form of the equation to write
the slope–intercept form of the equation in function notation.
237)
Passing through (4, 38) and (6, 52)
237)
A)
f(x) = – 1
7x +270
7
B)
f(x) =1
7x +262
7
C)
f(x) = – 7x +66
D)
f(x) =7x +10
Find the domain and range.
238)
{(7,7), (–1,–3), (–2,–7), (–2,3)}
238)
A)
domain = {7, –1, –2, –12}; range = {7, –3, –7, 3}
B)
domain = {7, –1, –2, 2}; range = {7, –3, –7, 3}
C)
domain = {7, –1, –2}; range = {7, –3, –7, 3}
D)
domain = {7, –3, –7, 3}; range = {7, –1, –2}
239)
{(–4,6), (9,3), (1,–1), (–6,–9)}
239)
A)
domain = {9, –4, 1, –6}; range = {3, –6, 6, –1, –9}
B)
domain = {9, –4, 1, –6}; range = {3, 3, 6, –1, –9}
C)
domain = {3, 6, –1, –9}; range = {9, –4, 1, –6}
D)
domain = {9, –4, 1, –6}; range = {3, 6, –1, –9}
Use the vertical line test to determine whether or not the graph is a graph of a function.
240)
240)
A)
function
B)
not a function
Find the slope.
241)
Find the slope of a line parallel to the line y = – 3
5x – 3.
241)
A)
5
3
B)
–3
5
C)
–3
D)
undefined
Answer Key
Testname: C2
Answer Key
Testname: C2
111
Answer Key
Testname: C2
112
Answer Key
Testname: C2
Answer Key
Testname: C2