DragonFlame
Solve the given system, using the substitution method.
y = 3x – 4
9x – 3y = 14



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DragonFlame
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@hartnn

DragonFlame
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A.
There is no solution.
B.
(12, 14)
C.
(14, 12)
D.
There are an infinite number of solutions.

hartnn
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plug in y= 3x 4 in the 2nd equation
9x  3(3x4) = 14
can you find 'x' from here ? try

DragonFlame
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I tried that and got \[9x9x12=14\]

hartnn
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3*4 is actually +12

DragonFlame
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. I feel stupid :P

hartnn
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and note that 9x9x =0

hartnn
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so,
12 = 14
is that even possible ?

DragonFlame
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So, its A no solution

hartnn
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absolutely correct :)

DragonFlame
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Thanks for helping me do it myself :)

hartnn
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most welcome ^_^

DragonFlame
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Instead of giving the answer you helped me understand