1. for the data in the table, does y vary directly with x? if it does write an equation for the direct variation.
10 | 12
15 | 18
20 | 24
A. yes; y = 1.2x
B. yes; y = 2x
C. yes; y = x + 1
D. 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.
x | y
32 | 24
16 | 8
8 | 6
3. Match the equation with the graph. y=1/3x-6
4. Match the equation with the graph. -3x+5y=15
5. The table shows the number of miles driven over time.
time (hours) | distance (miles)
4 | 204
6 | 306
8 | 408
10 | 510
6. Fine the slop of the line. So I can't put the picture in but I can put the answers in and hopefully someone will know what the graph looks like or has taken the test and knows the answer lol.
A. -4
B. -1/4
C. 1/4
D. 4
7. what is the slope of the line that passes through the pair of points (3,8) and (9,5)
8. What is the slope of the line. Again I can't put the picture in so ill just put the answers.
A. 0
B. 1
C. undefined
D. infinity
9. write an equation in point-slope form for the line through the given point with the given slope. (8,3); m=6
10. write an equation in point slope form for the line through the given point with the given slope. (-10, -6); m=-5/8
11. The table shows the height of a plant as it grows. Which equations in point slope form gives the plants height at any time
time (months) | Plant height (cm)
2 | 18
4 | 36
6 | 54
8 | 72
12. what is the graph of the equation. x=-5
13. write y=-3/4x+3 in standard from using integers.
14. write an equation for the line that is parallel to the given line and passes through the given point. y=5x+10; (2,14)
15. tell whether the lines for each pair of equations are parallel, perpendicular, or neither
y=-3x+7
-2x+6y=3
16. tell whether the lines for each pair of equations are parallel, perpendicular, or neither
y=-1/4x+10
-2x+8y=6
17. write the equation of a line that is perpendicular to the given line and that passes through the given point.
y-2 =7/3(x+5); (-4,9)
18. below are functions of y=|x| and y=|x|-5. How are the functions related
19. describe how the graphs of y=|x| and y=|x+2| are related
20. graph y=|x|-5
21. graph y=|x-4|
22. which type of correction is suggest by the scatter plot.
So I didn't add the answers only cause I'm lazy af. But if anyone needs me too I can.
17 answers
A. Yes; y=1.2x***
B. Yes; y=2x
C. Yes; y=x+1
D No; y does not vary directly with x
2.
A. Yes; y=0.5x
B. Yes; y=2x
C. Yes; y=1.5x
D.No; y does not vary directly with x***
3.
A.
B.
C.***
D.
the answers for those are graphs and I can't really put them in
4.
A.
B.***
C.
D.
The same is with these the answers are graphs and i can't put them in
5.
A. 51/1; your car travels 51 miles every 1 hour***
B. 204; your car travels 204 miles
C. 1/51; your car travels 51 miles every 1 hour
D. 10; your var travels for 10 hours
6.
A. -4
B. -1/4***
C.1/4
D.4
7.
A. -2
B. 2
C. 1/2***
D. -1/2
8.
A. 0
B. 1
C. undefined***
D. infinity
9
A. y+3=6(x-8)***
B. y-3=6(x-8)
C. y-3=6(x+8)
D. y+3=6x+8
10.
A. y-6=-5/8(x-10)
B. y-6=-5/8(x+10)
C. y+6=-5/8(x+10)
D. y+10=-5/8(x+6)***
11.
A. y+18=9(x+2)
B. y-18=9x+2
C. y-18=9(x-2)***
D. The relationship is nonlinear
12.
A.***
B.
C.
D.
This one has graphs as answers too
13.
A. 3x+4y=12
B. 3x+4y=-12***
C. 3x-4y=12
D. -3x+4y=12
14.
A. y=1/5x+4
B. y=-1/5x-4
C. y=5x-68
D. y=5x+4***
15.
A. Parallel
B. perpendicular ***
C. neither
16.
A. parallel
B. perpendicular
C. neither ***
17.
A. y-9=-3/7(x-4)***
B. y-9=3/7(x-4)
C. y-9=-3/7(x+4)
D. y-9 =3/7(x+4)
18.
A. the functions have the same shape. The y-intercerpt of y=|x| is 0, and the y-intcercept of the second function is 5
B. the functions have the same y-intercept. the second function is steeper then y=|x|
C. The two functions are the same ***
D. the functions have the same shape. the y-intercept of y=|x| is 0, and the y-intcercept of the second function is -5
19.
A. the graphs have the same shape. the y-intercept of y=|x| is 0, and the y-intercept of the second graph is -2***
B. the graphs have the same shape. the y-intercept of y=|x| is 0. and the x-intercept of the second graph is 2
C. the graphs have the same shape. the y-inyercept of y=|x| is 0. and the y-intcerpent of the second graph is 2
D. the two graphs are the same
20.
A. ***
B.
C.
D.
this one has graphs has answers
21.
A.
B.***
C.
D.
same with this the answers are graphs
22.
A. positive correlation
B. equal correlation
C. negative correlation
D. no correlation***
*** my answers
2. No; y does not vary directly with x
3. Graph ( y intercept is -6, its also a positive slope)
4. Graph ( y intercept is 2, its also a positive slope)
5. 58/1; your car travels 58 miles in 1 hour.
6. 1/5
7. -1/3
8. undefined
9. y - 3 = 5(x - 8)
10. y + 6 = -5/8(x + 10)
11. y - 18 = 9(x - 2)
12. Graph ( a vertical line on -3 (X AXIS)
13. 5x + 8y = 24
14. y = 5x + 4
15. perpendicular
16. neither
17. y - 3 = -3/8(x + 2)
18. The functions have the same shape. The y-intercept of y=|x| is 0, and the y-intercept of the second function is -3.
19. The two graphs have the same shape but the second graph is shifted 5 units LEFT.
20. Graph (y intercept is -3)
21. Graph (X is POSITIVE 5, y intercept is 0)
22. no correlation
23. On your own
24. On your own
:) 100%