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hali12
Group Title
HELP!! Solve the inequality 3x + 4y > 12 for y. Do not graph.
If you just give me the anwser I'll give u a medel
 2 years ago
 2 years ago
hali12 Group Title
HELP!! Solve the inequality 3x + 4y > 12 for y. Do not graph. If you just give me the anwser I'll give u a medel
 2 years ago
 2 years ago

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tyteen4a03 Group TitleBest ResponseYou've already chosen the best response.0
@kiamonstaa 's answer is not correct. This is an inequality, not an equation. To make y the subject of the inequality, subtract 3x from both sides, then divide 4 on both sides.
 2 years ago

Frank1991 Group TitleBest ResponseYou've already chosen the best response.1
3x+4y>12 => 3x +4y = 12, so y = (3x +12)/4 So y > ( 3x +12 )/4
 2 years ago

tyteen4a03 Group TitleBest ResponseYou've already chosen the best response.0
@Frank1991 An inequality CANNOT be turned into an equation.
 2 years ago

Frank1991 Group TitleBest ResponseYou've already chosen the best response.1
yes it can, just turn it back in your last step. You could check it with an random number for x
 2 years ago

kiamonstaa Group TitleBest ResponseYou've already chosen the best response.1
y>30.75x
 2 years ago

tyteen4a03 Group TitleBest ResponseYou've already chosen the best response.0
@Frank1991 No. Although the way of solving inequalities are similar to solving equations, you cannot say that an inequality is an equation, because while equation have finite answers, inequalities have an infinite answer set.
 2 years ago

Frank1991 Group TitleBest ResponseYou've already chosen the best response.1
@tyteen4a03 i understand your concern, but i think it is easier to turn it to an equality because it is familiar. And just check in your last step in the unequal sign is faced the correct way.
 2 years ago

hali12 Group TitleBest ResponseYou've already chosen the best response.0
I'm confused
 2 years ago

kiamonstaa Group TitleBest ResponseYou've already chosen the best response.1
i think my answer is correct.
 2 years ago

tyteen4a03 Group TitleBest ResponseYou've already chosen the best response.0
@Frank1991 Mathematics does not allow you to turn something into another thing just because it's "more familiar". You have to give proof. While it's OK for you to relate those two, you cannot say that an inequality is an equation, that is not an acceptable behaviour in mathematics.
 2 years ago

Frank1991 Group TitleBest ResponseYou've already chosen the best response.1
The answer is y > 3/4x +3. and yes @kiamonstaa is correct
 2 years ago

hali12 Group TitleBest ResponseYou've already chosen the best response.0
@kiamonstaa can you please post hoe you got that?
 2 years ago

tyteen4a03 Group TitleBest ResponseYou've already chosen the best response.0
@hali12 I just explained... To make y the subject of the inequality, subtract 3x from both sides, then divide 4 on both sides. 3x + 4y > 12 4y > 12  3x y > (123x)/4 y = 3  3/4x
 2 years ago

kiamonstaa Group TitleBest ResponseYou've already chosen the best response.1
well...yea ha
 2 years ago
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