does any one have the answers Lesson 9: Linear Functions Unit Test Basic Algebra 1 A Unit 5: Linear Functions?
ella.micky - 2011-12-01 14:17:17 - Homework Help
For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.
(1 point)
yes; y = 2.75x
yes; y = 0.6875x
yes; y = 1.375x
no; y does not vary directly with x
2. For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.
(1 point)
yes; y = 2x
yes; y = 4x
yes; y = 8x
no; y does not vary directly with x
3. Match the equation with its graph.
(1 point)
4. Match the equation with its graph.
(1 point)
5. The rate of change is constant in each table. Find the rate of change. Explain what the rate of change means for the situation.
The table shows the number of miles driven over time.
(1 point)
; Your car travels 51 miles every 1 hour.
204; Your car travels 204 miles.
; Your car travels 51 miles every 1 hour.
10; Your car travels for 10 hours.
6. Find the slope of the line.
(1 point)
–4
4
7. What is the slope of the line that passes through the pair of points?
(1, 7), (10, 1) (1 point)
8. What is the slope of the line that passes through the pair of points?
(–5.5, 6.1), (–2.5, 3.1) (1 point)
–1
1
–3
3
9. What is the slope of the line that passes through the pair of points?
(1 point)
10. What is the slope of the line?
(1 point)
0
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11. Write an equation in point-slope form for the line through the given point with the given slope.
(8, 3); m = 6 (1 point)
y + 3 = 6(x – 8)
y – 3 = 6(x – 8)
y – 3 = 6(x + 8)
y + 3 = 6(x + 8)
12. Write an equation in point-slope form for the line through the given point with the given slope.
(1 point)
13. Write an equation in point-slope form for the line through the given point with the given slope.
(3, –10); m = –0.83 (1 point)
y – 10 = –0.83(x + 3)
y – 10 = –0.83(x – 3)
y – 3 = –0.83(x + 10)
y + 10 = –0.83(x – 3)
14. The table shows the height of a plant as it grows. What equation in point-slope form gives the plant’s height at any time?
(1 point)
The relationship cannot be modeled.
15. What is the graph of the equation?
x = – 4 (1 point)
16. Write y = x + 7 in standard form using integers. (1 point)
–2x + 3y = 21
3x – 2y = 21
–2x – 3y = 21
–2x + 3y = 7
17. Write y = –0.5x + 0.8 in standard form using integers. (1 point)
5x – 10y = 8
5x + 10y = 8
–5x + 10y = 8
–5x – 10y = 8
18. Write an equation for the line that is parallel to the given line and passes through the given point.
y = 5x + 10; (2, 14) (1 point)
19. Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.
(1 point)
parallel
perpendicular
neither
20. Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.
(1 point)
parallel
perpendicular
neither
21. Write the equation of a line that is perpendicular to the given line and that passes through the given point.
(1 point)
22. Below are the graphs of and . How are the graphs related?
(1 point)
The graphs have the same shape. The y-intercept of is 0, and the x-intercept of the second graph is –9.
The graphs have the same y-intercept. The second graph is steeper than .
The two graphs are the same.
The graphs have the same shape. The y-intercept of is 0, and the y-intercept of the second graph is –9.
23. Below are the graphs of and . How are the graphs related?
(1 point)
The two graphs are the same.
The graphs have the same y-intercept. The second graph is steeper than .
The graphs have the same shape. The y-intercept of is 0, and the x-intercept of the second graph is 11.
The graphs have the same shape. The y-intercept of is 0, and the y-intercept of the second graph is 11.
24. Graph (1 point)
25. Graph (1 point)
yes i go to connections no i havent taken it yet
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