SOLUTION: Using substitution to find the point (x,y) y=3-2x y=5+2x

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Using substitution to find the point (x,y) y=3-2x y=5+2x      Log On


   

Question 103775This question is from textbook
: Using substitution to find the point (x,y)
y=3-2x
y=5+2x This question is from textbook

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Set the two equations equal to each other

5%2B2x=3-2x




2x=3-2x-5Subtract 5 from both sides


2x%2B2x=3-5 Add 2x to both sides


4x=3-5 Combine like terms on the left side


4x=-2 Combine like terms on the right side


x=%28-2%29%2F%284%29 Divide both sides by 4 to isolate x



x=-1%2F2 Reduce

--------------------------------------------------------------
Answer:
So our answer is x=-1%2F2



Now plug in x=-1%2F2 in either equation to find y

y=3-2%28-1%2F2%29 Plug in x=-1%2F2


y=3%2B1 Multiply


y=4 Add


So our solution is x=-1%2F2 and y=4