Graphing equations with review quiz 3.8 with answers with some ink.notebook
November 09, 2016
2. Line through (4, ­1) slope = ­
3. Line through ( 2, 3) slope = ­2
Graphing Equations
Slope = 1. Line through (2, 1) slope =
5. y = 2x ­ 4
6.
m = ____, b = _____
m = ____, b = _____
7. y = ­ x + 3
m = ____, b = _____
1
Graphing equations with review quiz 3.8 with answers with some ink.notebook
November 09, 2016
Find the slope of each graph.
8.
9.
10.
11. y = 5 m = ____, b = _____
12. x = 5
m = ____, b = _____
14. ­3x + y = ­2 y = _______________
13. 2x + y = 4
m = ____, b = _____
y = _______________
m = ____, b = _____
2
Graphing equations with review quiz 3.8 with answers with some ink.notebook
November 09, 2016
15. 2y = 6x ­ 8 16.
17.
y = _______________
m = ____, b = _____
18.
19.
20.
21.
3
Graphing equations with review quiz 3.8 with answers with some ink.notebook
November 09, 2016
State the x and y intercepts and then graph each line.
Alg 1 Quiz 3.8 REVIEW
24. –4x + 10y = 20
x = _____ y = _____
4
Graphing equations with review quiz 3.8 with answers with some ink.notebook
November 09, 2016
State the x and y intercepts and then graph each line.
25. 2x + 6y = 18
26. Identify the intercepts from the graph. y
x = _____ y = _____
x
Put each equation into slope­intercept form and then graph each equation.
28. y = 3x 27. Rewrite in standard form. (Ax + By = C)
2y = –5x + 1
slope = _____ y­int = _____
5
Graphing equations with review quiz 3.8 with answers with some ink.notebook
November 09, 2016
Put each equation into slope­intercept form and then graph each equation.
29. 2y = –8x – 6
Put each equation into slope­intercept form and then graph each equation.
30. y – 4x = 1
y = _______________
y = _______________
31. Find the average rate of change from the table.
32. Susan has $175 in her savings account. She plans to save $50 per week from her job. a) Write an equation for the total amount of money in her savings account, based on the number of weeks.
b) How long will it take her to save $1500? Show all your work and round to a whole week.
6
Graphing equations with review quiz 3.8 with answers with some ink.notebook
November 09, 2016
Name the transformation in each function from f(x) = x.
33. g(x) = x + 7
36. Which line is steeper? 34. g(x) = x – 8 b) f(x) = –2x + 1
35. g(x) = –x + 1
Graph each inequality. Don’t forget to shade.
(< > dotted line , < > solid line)
Graph each inequality. Don’t forget to shade.
39. 3x + y < 5
(< > dotted line , < > solid line)
37. y > x + 3
38.
y < _____________
7
Graphing equations with review quiz 3.8 with answers with some ink.notebook
November 09, 2016
Answers:
40. Match the graph: A flag is raised up a flagpole at a constant rate of speed.
1.
3.
5. m = 2, b = -4
7. m = -1, b = 3
11. m = 0, b = 5
9. -2
13. y = -2x + 4
15. y = 3x - 4
m = 3, b = -4
m = -2, b = 4
17. x = 8, x = -14
21. n = 3
25.
x = 9
y = 3
27. 5x + 2y = 1
28. slope = 3, y-int = 0 30.
y = 4x + 1
19. x = -30
23. x = 2
32.a) y = 50x + 175
b) 1500 = 50x + 175
x = 26.5
27 weeks
33. up 7
35. reflect over x-axis, up 1
8
Graphing equations with review quiz 3.8 with answers with some ink.notebook
November 09, 2016
38.
39.
y < -3x + 5
9