# Math

How many solutions does the system of equations have?
3x=-12y+15 and x + 4y=5

Y=6x+2 and 3y-18x=12

x-2y=6 and 3x – 6y =18

y-5x=-6 and 3y-15x=-12

Ok, so I’m having problems with these, so if Steve or Reiny could help with these problems and show the work for them that would help me study that would be great, however I need this done in 20 min. ( I know it’s bad having time limits) but unfortunately I need it done soon… so if you can help, awesome.

1. 👍 0
2. 👎 0
3. 👁 1,483
1. 3x=-12y+15 and x + 4y=5
These two equations are the same. There is a y for any x.

Y=6x+2 and 3y-18x=12
3y = 18 x + 12 is y = 6 x + 4
These are parallel lines that never intersect, no solution

x-2y=6 and 3x – 6y =18
again divide equation 2 by 3 and get
x - 2 y - 6
the two equations are the same, infinite solutions again

y-5x=-6 and 3y-15x=-12
divide second one by 3 and get
y - 5 x = -4
Again two parallel lines never cross, no solutions

1. 👍 0
2. 👎 0
2. Thank you Damon~!

1. 👍 0
2. 👎 0
3. Were they right?

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Algebra

if (x,y) is a solution to the system of equations above and x > 0 what is the value of x? y-x^2 +2 = 9x y = 4x + 4 What is the value of y in the solutions of the system of equations above? 8x-4y =7 5y - 4x = 10

2. ### Algebra 1

1.) Which best describes a system of equations that has no solution? A. Consistent, independent B. inconsistent, dependent C. consistent, dependent D. inconsistent** 2.) How many solutions does this system have? 2x+y=3 6x=9-3y A.

3. ### Algebra

How many solutions does this system of equations have? y = 4x + 3 and 2y - 8x = 3 One, two, infinitely many, or no solutions? My answer is no solutions.

4. ### MATH PLS HELP CHECK ANSWERS

3. What is the rule for the function shown in the table? (1 point) x = -1, 0, 1, 2 y = -2, 1, 4, 7 A.y = 1/3x + 1 B.y = 3x + 1 C.y = 1/3x D.y = 1/2x + 1 4. What is the function rule for the following situation? rex paid \$20 for a

1. ### algebra

solve the system of equations by graphing. Then classify the system as consistent or inconsistent and the equations as dependent or independent. x+y=14 x-y=2 What is the solution of the system of equations?

Which cannot describe a system of linear equations? no solution exactly two solutions infinite solutions exactly one solution I thought it was A or D but someone else is telling me it is B...no I'm confused...I thought it was 2 or

3. ### Math

Correct the error in this equation: 6(2y+6)=4(9+3y) 12y+36=36+12y 12y=12y 0=0 y=0

4. ### math

two systems of equations are given below for each system, choose the best description of it solution. 1) the system has no solution 2) the system has a unique solution 3) the system has a infinitity many solutions. they must

1. ### Math

How many solutions does the system of equations have? y=6x+2 and 3y-18x=12 one two infinitely many none How many solutions does the system of equations have? x-3y=15 and 3x-9y=45 one two infinitely many none How many solutions

2. ### math

two systems of equations are giving below for each system choosethe best description of its solution if applicable give solution x+4y=8 -x-4y= -8 choose which one this problem fit in 1)the system has no solution 2) the system has

3. ### Math

1. How many solutions does the system of equations have 3x=-12y+15 and x+4y=5 a. one b. two c. infinitely many*** d. none 2. How many solutions does the system of equations have y=6x+2 and 3y-18x=12 a. one b. two c. infinitely

4. ### Math

Which best describes a system of equations that has infinitely many solutions? consistent, independent inconsistent, dependent consistent, dependent inconsistent How many solutions does this system have? y = x + 5 y = -5x - 1 one