13 1-13 7 Practice Worksheet Answers 2u3e47
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Answers for Practice worksheets 13.1-13.7 b. after 7 weeks
13.1 Practice B 1.
2.
3.
4.
11.
not a line 7. 5.
6.
slope = 0
8.
slope = 2
2.
slope = 0
13.2 Practice B 1. slope =
3.
1 5
slope = − 6
7. a. 5. slope =
3 2
4. slope =
6.
4 3
slope = −1
7. 10 feet 8. a.
slope = 0.1
b. The phone calls cost $0.10 per minute. c. $0.50
d. 30 minutes
Extension 13.2 Practice b. Sample answer: about $42
3 2
8. y = − x − 3
c. $42.50
9. y = − 4 x + 6
1. A and B; They both have a slope of 3.
1 6
2. A and C; They both have a slope of − . 3. no; x = −1 has an undefined slope and y = 2 has
a slope of 0. 4. yes; Both lines are vertical and have an undefined
slope. 10. a. y = 10 + 6 x
5. yes; Both lines are horizontal and have a slope of 0. 6. yes; Opposite sides have the same slope. 7. B and C; Line B has a slope of 2. Line C has a slope
1 of − . The product of their slopes is 2 ⎛ 1 ⎞ 2 • ⎜ − ⎟ = −1. ⎝ 2 ⎠
Copyright © Big Ideas Learning, LLC All rights reserved.
Big Ideas Math Red Accelerated Answers for Resources by Chapter
A1
Answers for Resources by Chapter 1 . Line C has a 3 slope of − 3. The product of their slopes is
8. A and C; Line A has a slope of
7.
6 5
8. 7.5
1 • (− 3) = −1. 3 9. yes; Line x = 1 is vertical. Line y = 0 is
horizontal. A vertical line is perpendicular to a horizontal line. 10. no; Both lines are horizontal and have a slope of 0.
9. − 6
10. −
7 2
11. yes; Line x = − 2 is vertical. Line y = 2 is
horizontal. A vertical line is perpendicular to a horizontal line. 12. no; Adjacent sides are not perpendicular.
13.3 Practice B
11. a. y = 0.50 x + 10
1. no; The graph does not through the origin.
b.
2. yes; y = 12 x; The graph is a line that es
through the origin. 3. yes; y = 4 x; The rate of change in the table is
constant. 4. yes; y =
2 x; The rate of change in the table is 3
constant.
c. $17.50 12. a. y = 6 x
5. a. y = 9 x
b.
b. It costs $9 to rent the lane for 1 hour. c. $27 6. a. yes; The graph is a line that es through
the origin.
1 x; The height of the water in the tank 20 1 rises inch per gallon of water. 20 c. 12.5 in.
b. y =
13.4 Practice B 3 1. m = − ; b = 10 8
4 5
3. m = − ; b = −
5. m = 4; b =
A2
2 7
1 5
2.
m = 4.5; b = 7
4.
m = 5.5; b = − 2.5
6. m =
c. 184 items per month
d. 46 items per week
2 ; b = −5 3
Big Ideas Math Red Accelerated Answers for Resources by Chapter
Copyright © Big Ideas Learning, LLC All rights reserved.
Answers for Practice worksheets 13.1-13.7 13.5 Practice B
7. a.
2 3
1. y = − x + 4
2. y = 2 x − 5
3.
4.
b. 5. 0; 0
6. no x-intercept; 5
7.
8.
1 page 1 or page per minute 6 minutes 6
c. y =
1 x 6
13.7 Practice B
9. a. 80 x + 40 y = 480
b. 6; 12 d. 5 days
c.
1. y =
5 x − 2 4
2. y = − 4 x + 3
3. y =
1 x+5 3
4. y = − x − 1
5. y = 2 x − 3
6. y = − 3 x + 2
7. y = 4 x − 5
8. y =
4 x −4 5
10. y =
5 x −1 2
1 3
9. y = − x + 2
3 4
11. a. y = − 2 x + 24 10.
a.
y = 80 + 32 x
b. − 2.5; 80
b. 24 feet
c. after 12 seconds
c.
d. no; The visit cannot last a negative number
of hours. 13.6 Practice B 1. y = 1, y = 3 x − 5, y = − 2, y = − 3 x − 5
1 7 3. y = x + 4 4. a. 4 5 5.7 inches per year b. y = 5.7 x + 6 c. 28.8 inches
2. y = − x − 1
5. y =
3 x +5 2
6. y = − 2 x − 3
Copyright © Big Ideas Learning, LLC All rights reserved.
Big Ideas Math Red Accelerated Answers for Resources by Chapter
A3
13.1 Practice B 1.
2.
3.
4.
11.
not a line 7. 5.
6.
slope = 0
8.
slope = 2
2.
slope = 0
13.2 Practice B 1. slope =
3.
1 5
slope = − 6
7. a. 5. slope =
3 2
4. slope =
6.
4 3
slope = −1
7. 10 feet 8. a.
slope = 0.1
b. The phone calls cost $0.10 per minute. c. $0.50
d. 30 minutes
Extension 13.2 Practice b. Sample answer: about $42
3 2
8. y = − x − 3
c. $42.50
9. y = − 4 x + 6
1. A and B; They both have a slope of 3.
1 6
2. A and C; They both have a slope of − . 3. no; x = −1 has an undefined slope and y = 2 has
a slope of 0. 4. yes; Both lines are vertical and have an undefined
slope. 10. a. y = 10 + 6 x
5. yes; Both lines are horizontal and have a slope of 0. 6. yes; Opposite sides have the same slope. 7. B and C; Line B has a slope of 2. Line C has a slope
1 of − . The product of their slopes is 2 ⎛ 1 ⎞ 2 • ⎜ − ⎟ = −1. ⎝ 2 ⎠
Copyright © Big Ideas Learning, LLC All rights reserved.
Big Ideas Math Red Accelerated Answers for Resources by Chapter
A1
Answers for Resources by Chapter 1 . Line C has a 3 slope of − 3. The product of their slopes is
8. A and C; Line A has a slope of
7.
6 5
8. 7.5
1 • (− 3) = −1. 3 9. yes; Line x = 1 is vertical. Line y = 0 is
horizontal. A vertical line is perpendicular to a horizontal line. 10. no; Both lines are horizontal and have a slope of 0.
9. − 6
10. −
7 2
11. yes; Line x = − 2 is vertical. Line y = 2 is
horizontal. A vertical line is perpendicular to a horizontal line. 12. no; Adjacent sides are not perpendicular.
13.3 Practice B
11. a. y = 0.50 x + 10
1. no; The graph does not through the origin.
b.
2. yes; y = 12 x; The graph is a line that es
through the origin. 3. yes; y = 4 x; The rate of change in the table is
constant. 4. yes; y =
2 x; The rate of change in the table is 3
constant.
c. $17.50 12. a. y = 6 x
5. a. y = 9 x
b.
b. It costs $9 to rent the lane for 1 hour. c. $27 6. a. yes; The graph is a line that es through
the origin.
1 x; The height of the water in the tank 20 1 rises inch per gallon of water. 20 c. 12.5 in.
b. y =
13.4 Practice B 3 1. m = − ; b = 10 8
4 5
3. m = − ; b = −
5. m = 4; b =
A2
2 7
1 5
2.
m = 4.5; b = 7
4.
m = 5.5; b = − 2.5
6. m =
c. 184 items per month
d. 46 items per week
2 ; b = −5 3
Big Ideas Math Red Accelerated Answers for Resources by Chapter
Copyright © Big Ideas Learning, LLC All rights reserved.
Answers for Practice worksheets 13.1-13.7 13.5 Practice B
7. a.
2 3
1. y = − x + 4
2. y = 2 x − 5
3.
4.
b. 5. 0; 0
6. no x-intercept; 5
7.
8.
1 page 1 or page per minute 6 minutes 6
c. y =
1 x 6
13.7 Practice B
9. a. 80 x + 40 y = 480
b. 6; 12 d. 5 days
c.
1. y =
5 x − 2 4
2. y = − 4 x + 3
3. y =
1 x+5 3
4. y = − x − 1
5. y = 2 x − 3
6. y = − 3 x + 2
7. y = 4 x − 5
8. y =
4 x −4 5
10. y =
5 x −1 2
1 3
9. y = − x + 2
3 4
11. a. y = − 2 x + 24 10.
a.
y = 80 + 32 x
b. − 2.5; 80
b. 24 feet
c. after 12 seconds
c.
d. no; The visit cannot last a negative number
of hours. 13.6 Practice B 1. y = 1, y = 3 x − 5, y = − 2, y = − 3 x − 5
1 7 3. y = x + 4 4. a. 4 5 5.7 inches per year b. y = 5.7 x + 6 c. 28.8 inches
2. y = − x − 1
5. y =
3 x +5 2
6. y = − 2 x − 3
Copyright © Big Ideas Learning, LLC All rights reserved.
Big Ideas Math Red Accelerated Answers for Resources by Chapter
A3
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