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DragonFlame
Group Title
Solve, using the substitution method.
y – 2x = 8
16 + 4x = 2y
 7 months ago
 7 months ago
DragonFlame Group Title
Solve, using the substitution method. y – 2x = 8 16 + 4x = 2y
 7 months ago
 7 months ago

This Question is Closed

hartnn Group TitleBest ResponseYou've already chosen the best response.1
y2x = 8 add 2x on both sides, what u get ?
 7 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
y=9+2y
 7 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
now plug in y= 8+2x in 2nd equation
 7 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
I thought of doing 2x=8y
 7 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
that can work, but things will get complicated soon.
 7 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
16+4x=2(8+2x)
 7 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
I see... I will use the way u told me than
 7 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
yes, simplify 2(8+2x)
 7 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
16+4x=16+4x
 7 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
O.O IMPOSSIBLE
 7 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
correct. now think logically, when is that true
 7 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
not impossible its like 0=0
 7 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
S0 infinite number of solutions
 7 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
you take any value of x or y 16+4x will always be = 16+4x so, yes, infinite solutions :)
 7 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
yay! Thanks so much
 7 months ago

mathmale Group TitleBest ResponseYou've already chosen the best response.0
Note how one of the given equations is a multiple of the other given equation. That's all the info you need to decide "infinitely many solutions."
 7 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
I see, Thanks :)
 7 months ago
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