HELP with ALGEBRA!!!!?

HELP with ALGEBRA!!!!?

Postby jani79 » December 24th, 2012, 4:33 am

school is almost done and my teacher said she would raise my grade if i get all the problems correct . please help me! i would really appreciate it.

1. which point is NOT part of the solution of the inequality y<|3x|+1
a. (-4,12)
b. (2,9)
c. (3,15)
d. (0,0)

2.which point is part of the solution of the inequality y?|x+2|-3
a. (0,0)
b. (-1,-1)
c. (1,0)
d. (0,1)

3. graph the equation y<2|x-1|-2 which point is part of the solution
a. (1,2)
b. (1,1)
c. (2,3)
d. (-1,-1)

4.graph the inequality y?-|x-4| which point is NOT part of the solution
a. (1,-4)
b. (1,1)
c. (2,-2)
d. (3,-1)

5.graph the inequality y?2|x-1|-2
a. (1,0)
b. (0,-3)
c. (3,0)
d. (-1,0)

6.identify the function in which y varies directly with x
a. y=5x
b. x=5y
c. x=5y+5
d. x=5y-5

7. which ordered pair is the vertex of y=-2|x-7|+2
a. (7,2)
b. (-2,-7)
c. (-7,-2)
d. (7,-2)

8. which ordered pair could you remove from the relation (-1,0),(1,3),(2,2),(2,3),(3,1) so that is becomes a function
a. (1,2) or (2,3)
b. (2,2) or (2,3)
c. (1,3) or (3,1)
d. (2,3) or (3,1)

9.at 7:00 a.m. the temperature outside was degrees Fahrenheit by 11.00 am, the temperature had risen to 72 degrees Fahrenheit. which equation models the temperature y at time x
a. y=-4x+28
b. y=4x-28
c. y=4x+28
d. y=-4x-28

10.a car enters an interstate highway 20 mi north of a city.the car travels north at an average speed of 58mph. which equation models the car's distance d from the city after traveling for h hours.
a. d=58h+20
b. 20d=h+58
c. 58=20h+d
d. d=20h+58

11.there are 52 blades of grass in 2 in^2 of lawn. there are 580 blades of grass in 8in^2 of the same lawn. which equation models the y blades of grass found in x in^2 of lawn
a. y=88x-124
b. y=-88x+124
c. y=-88x-124
d. y=88+124

12.a young tree is planted in a garden. After 3 years it is 180 cm tall. After 7 years it is 368 cm tall. How tall will the tree be after ten years?
a. 587 cm
b. 470 cm
c. 548 cm
d. 509 cm

13.a 2- mi cab cost $4.25 a 7-mi cab cost $8.50. which equation models the cost y of a cab ride that is x miles.
a. y=0.85x-2.25
b. y=-0.85x+2.25
c. y=-0.85x-2.25
d. y=0.85x+2.25
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jani79
 
Posts: 46
Joined: March 20th, 2012, 10:34 am

HELP with ALGEBRA!!!!?

Postby cairo » December 24th, 2012, 4:36 am

school is almost done and my teacher said she would raise my grade if i get all the problems correct . please help me! i would really appreciate it.

1. which point is NOT part of the solution of the inequality y<|3x|+1
a. (-4,12)
b. (2,9)
c. (3,15)
d. (0,0)

2.which point is part of the solution of the inequality y?|x+2|-3
a. (0,0)
b. (-1,-1)
c. (1,0)
d. (0,1)

3. graph the equation y<2|x-1|-2 which point is part of the solution
a. (1,2)
b. (1,1)
c. (2,3)
d. (-1,-1)

4.graph the inequality y?-|x-4| which point is NOT part of the solution
a. (1,-4)
b. (1,1)
c. (2,-2)
d. (3,-1)

5.graph the inequality y?2|x-1|-2
a. (1,0)
b. (0,-3)
c. (3,0)
d. (-1,0)

6.identify the function in which y varies directly with x
a. y=5x
b. x=5y
c. x=5y+5
d. x=5y-5

7. which ordered pair is the vertex of y=-2|x-7|+2
a. (7,2)
b. (-2,-7)
c. (-7,-2)
d. (7,-2)

8. which ordered pair could you remove from the relation (-1,0),(1,3),(2,2),(2,3),(3,1) so that is becomes a function
a. (1,2) or (2,3)
b. (2,2) or (2,3)
c. (1,3) or (3,1)
d. (2,3) or (3,1)

9.at 7:00 a.m. the temperature outside was degrees Fahrenheit by 11.00 am, the temperature had risen to 72 degrees Fahrenheit. which equation models the temperature y at time x
a. y=-4x+28
b. y=4x-28
c. y=4x+28
d. y=-4x-28

10.a car enters an interstate highway 20 mi north of a city.the car travels north at an average speed of 58mph. which equation models the car's distance d from the city after traveling for h hours.
a. d=58h+20
b. 20d=h+58
c. 58=20h+d
d. d=20h+58

11.there are 52 blades of grass in 2 in^2 of lawn. there are 580 blades of grass in 8in^2 of the same lawn. which equation models the y blades of grass found in x in^2 of lawn
a. y=88x-124
b. y=-88x+124
c. y=-88x-124
d. y=88+124

12.a young tree is planted in a garden. After 3 years it is 180 cm tall. After 7 years it is 368 cm tall. How tall will the tree be after ten years?
a. 587 cm
b. 470 cm
c. 548 cm
d. 509 cm

13.a 2- mi cab cost $4.25 a 7-mi cab cost $8.50. which equation models the cost y of a cab ride that is x miles.
a. y=0.85x-2.25
b. y=-0.85x+2.25
c. y=-0.85x-2.25
d. y=0.85x+2.25
Some of these are pretty easy - have you even TRIED them yourself?
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Posts: 40
Joined: June 25th, 2012, 8:32 am


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