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 one year ago
BEST RESPONSE WILL GET A MEDAL AND A FAN
For the following system, if you isolated y in the first equation to use the Substitution Method, what expression would you substitute into the second equation?
4x − y = 8
2x + 3y = 9
8 − 4x
8 + 4x
−8 + 4x
−8 − 4x
 one year ago
BEST RESPONSE WILL GET A MEDAL AND A FAN For the following system, if you isolated y in the first equation to use the Substitution Method, what expression would you substitute into the second equation? 4x − y = 8 2x + 3y = 9 8 − 4x 8 + 4x −8 + 4x −8 − 4x

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jiteshmeghwal9
 one year ago
Best ResponseYou've already chosen the best response.04xy=8 Add y both sides wht do u gt ?

jiteshmeghwal9
 one year ago
Best ResponseYou've already chosen the best response.0Adding y both sides 4xy+y=8+y 4x=8+y

jiteshmeghwal9
 one year ago
Best ResponseYou've already chosen the best response.0Gt it till right here ?

JamesJ
 one year ago
Best ResponseYou've already chosen the best response.1Actually what you are being asked to do is find an expression for y in terms of x, and substitute that into the second equation. So if your two equations are 4x − y = 8 2x + 3y = 9 Then from the first equation we have that y = 8  4x hence y = 8 + 4x or y= 4x  8 This is the expression you would substitute into the second equation, as in 2x + 3y = 9 thus 2x + 3(4x  8) = 9 Note the the question is NOT asking you to solve the equations. It is just asking you to find an expression for y from the first of each pair of equations which you would substitute into the second equation.

JamesJ
 one year ago
Best ResponseYou've already chosen the best response.1No 4x  y = 8 Hence y = 8  4x and thus y = (84x) y = 4x  8

helpasap111
 one year ago
Best ResponseYou've already chosen the best response.0but what if that isnt one of the choices

JamesJ
 one year ago
Best ResponseYou've already chosen the best response.1But it IS one of the choices.

JamesJ
 one year ago
Best ResponseYou've already chosen the best response.14x  8 is equal to exactly one of these expressions: 8 − 4x 8 + 4x −8 + 4x −8 − 4x

JamesJ
 one year ago
Best ResponseYou've already chosen the best response.14x  8 Can it be 8  4x, I don't think so, because if it were then 4x  8 = 8  4x = (4x  8)

JamesJ
 one year ago
Best ResponseYou've already chosen the best response.1Remember that a + b = b + a. This is called the commutative property of addition. Hence 4x  8 = 8 + 4x
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