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sonja_lee2
Group Title
what is the ycoordinate of the solution of the system of equations?
3x+2y=25
x+y=0
 one year ago
 one year ago
sonja_lee2 Group Title
what is the ycoordinate of the solution of the system of equations? 3x+2y=25 x+y=0
 one year ago
 one year ago

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ChmE Group TitleBest ResponseYou've already chosen the best response.0
solve the second equation for x. Let me know what you get..
 one year ago

sonja_lee2 Group TitleBest ResponseYou've already chosen the best response.0
idk....
 one year ago

ChmE Group TitleBest ResponseYou've already chosen the best response.0
if you add something to each side of an equation does anything really change, besides the way the equation looks?
 one year ago

ChmE Group TitleBest ResponseYou've already chosen the best response.0
7x=7 if x=1 then this equation is true, correct? if we add 3 to each side 7x+3=10 and x is still 1, the equation is still true just looks different
 one year ago

sonja_lee2 Group TitleBest ResponseYou've already chosen the best response.0
oh okay
 one year ago

ChmE Group TitleBest ResponseYou've already chosen the best response.0
we want to get x by itself and positive the easiest way to do that is to add x to each side of the equation. y  x = 0 y  x + x = 0 + x
 one year ago

ChmE Group TitleBest ResponseYou've already chosen the best response.0
y=x or x=y doesn't matter how you write it
 one year ago

ChmE Group TitleBest ResponseYou've already chosen the best response.0
Now that we know this. we can substitute the x's for a y. This is called the substitution method. 3(y) + 2y = 25 Now solve for y
 one year ago
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