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helpasap111
 3 years 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
helpasap111
 3 years 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
 3 years ago
Best ResponseYou've already chosen the best response.04xy=8 Add y both sides wht do u gt ?

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

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

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

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

JamesJ
 3 years 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
 3 years 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
 3 years 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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