SOLUTION: I haven't been successfull figuring this one out. Can anyone help? 2x + y = 0 x + 1.5y = 4.5 Solve the system of linear equations. Thank You!

Question 60943This question is from textbook College Algebra
: I haven't been successfull figuring this one out. Can anyone help?
2x + y = 0
x + 1.5y = 4.5
Solve the system of linear equations. Thank You! This question is from textbook College Algebra

Answer by jai_kos(139) (Show Source): You can put this solution on YOUR website!
Given 2x + y = 0 (1)
x + 1.5 y = 4.5 (2)
Consider equation (1),
2x + y = 0
2x = -y
Divide by �-1�,
-2x = y (3)
Substitute equation (3) in equation (2), we get
x + (1.5) * (-2x) = 4.5
x - 3.00x = 4.5
- 2 x = 4.5
x = 4.5 / -2 = -2.25
Now substitute for x = -2.25 in equation (3),
-2( -2.25) = y
4.5 = y
Therefore the value of x = -2.25 and the value of y = 4.5

RELATED QUESTIONS
Suppose P(x) is a quadratic polynomial (highest degree of 2) satisfying P(P(x)) -... (answered by greenestamps)

Please help me solve this linear system -2x + 5y =5 and... (answered by Alan3354)

Please help me solve this... (answered by Fombitz)

I have been working on this for days. If anyone can help, I would appreciate it. I have... (answered by jim_thompson5910,stanbon)

Hello out there,I need some help with some problems,the first one is,Solve the system of... (answered by checkley71)

solve this linear system using the method of substitution: 1/4x + 1/2y = -5/12 2x -... (answered by josgarithmetic,macston)

hi! I haven't been successful in finding help online on how to do this type of problem,... (answered by math_tutor2020,Solver92311,ikleyn)

I am having problems figuring out matrices and row operations. If anyone can help with... (answered by richwmiller,Edwin McCravy)

Can anyone help me solve each system by addition. x+y=7 x-y=9 ------ x-2y=-1 -x+5y=4 (answered by checkley77)