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Please help me solve these problems Determine whether the

Resolved Question:

Please help me solve these problems

Determine whether the equations are parallel,perpendicular or neither

1) 9x+3y=12
7y-31=21x

2) y=4x-3
12x+3y=7

AND

Graph this linear inequality
2x+y<_ 2
Submitted: 2 years ago.
Category: Homework
Expert:  Sandhya replied 2 years ago.

Determine whether the equations are parallel,perpendicular or neither

 

1)

 

9x+3y=12
7y-31=21x

 

Slope of line 9x + 3y = 12 is -3.
Slope of line 7y-31=21x is 3.

The slopes of lines are not equal and product of slopes is not -1 so lines are neither parallel nor perpendicular.

 

Answer: Neither

 

2)

 

y=4x-3
12x+3y=7

 

Slope of line y=4x-3 is 4.
Slope of line 12x+3y=7 is -4.

The slopes of lines are not equal and product of slopes is not -1 so lines are neither parallel nor perpendicular.

 

Answer: Neither

 

Graph this linear inequality
2x+y <= 2

 

graphic

 

Please don't forget to click ACCEPT. BONUS is always appreciated.

 

Customer: replied 2 years ago.

Graph this linear equality should read less than or equal to not equal to. My error.

 

Also,can you help me with these problems:

 

Choose the ordered pair which is a solution of the inequality

 

1)2x+3y less than or equal to 0

 

2) 2x-4y less than or equal to 6

Expert:  Sandhya replied 2 years ago.
Hi

I have graphed the inequality 2x+y ≤ 2.

Do you have any options for next two questions?

Let me know.

Thanks
Customer: replied 2 years ago.

For 1) I have (-1,1)

 

For 2) I have (3,-1)

Are these answers correct? These are the 2 last questions I asked for help with.

Expert:  Sandhya replied 2 years ago.
Choose the ordered pair which is a solution of the inequality

1)2x+3y less than or equal to 0

(-1,1)

2*(-1) + 3*1 = 1 which not less than 0

Answer: NO

2) 2x-4y less than or equal to 6

(3,-1)

2*3 -4(-1) = 10 which not less than 6

Answer: NO
Customer: replied 2 years ago.
OK, SO WHAT IS THE CORRECT ANSWERS?
Expert:  Sandhya replied 2 years ago.
Hi,

Can you please send screenshot of the question?

You have given only one option for each inequality and these not solution.

Thanks
Customer: replied 2 years ago.

1) Choose the ordered pair which is a solution of the inequality

2x+3y less than or equal to 0

 

(1,-1),(1,1),(-1,1)[1/2,1/3]

 

2) Choose the ordered pair which is a solution of the inequality

2x-4y less than or equal to 6

 

(3,1),(1,-1),(0,-2),(2,-2)

Expert:  Sandhya replied 2 years ago.
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Category: Homework
Satisfied Customers: 3629
Experience: I have several years of teaching experience.
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