6/30/2021
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Exercises 4.2: Graphs of Linear Equations
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Termia Jones
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Question 3
0/1 pt
3
95
0/1 pt
3
99
Write the equation of the line shown. Be sure to use the correct variable.
Equation:
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Question 5
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10 y
8
6
4
2
10
-5
x
5
-2
10
-4
-6
-8
-10
Write the equation of the line shown. Be sure to use the correct variable.
Equation:
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Question 6
Sketch a graph of y =
0/1 pt
3
99
0/1 pt
3
99
x+2
5
4
3
2
1
-5
-4
-3
-2
-1
1
2
3
4
5
-1
-2
-3
-4
-5
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Question 7
Last year, Pinwheel Industries introduced a new toy. It cost $4300 to develop the toy and $30 to
manufacture each toy. Fill in the blanks below as appropriate.
A.) Give a linear equation in the form C = mn+b that gives the total cost, C, to produce n of these toys:
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C =
B.) The total cost to produce n = 1200 toys is $ .
C.) With $142300, a total of
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toys can be produced.
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Question 8
0/1 pt
3
99
0/1 pt
3
99
10
5
-10
-8
-6
-4
-2
2
4
6
8
10
-5
-10
Write the equation of the line shown. Be sure to use the correct variable.
Equation:
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Question 9
A town's population has been growing linearly. In 2003 the population was 45,000. The population has
been growing by 700 people each year.
Write an equation for the population, P, x years after 2003.
P=
Use the formula to find the population in 2009:
A company makes pens. They sell each pen for $5.
Their revenue is represented by R = 5 x.
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Question 10
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0/1 pt
3
99
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The cost to make the pens is $1 each with a one time start up cost of $6500.
Their cost is represented by C = 1 x + 6500.
a) Find the profit, P, (P = R - C) when the company sells 1000 pens.
5000
11500
-5500
-5000
-2500
b) Find the number of pens they need to sell to break even (when R = C).
6500
1625
1300
2167
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