Algebra 1 Problem help...

Question

anonymous · Answer

attachment

strawberry17 · Answer

9(6x - 2y = 4)      >>>  54x - 18y = 36
6(-9x + 3y = 12)  >>  -54x + 18y = 12

anonymous · Answer

$$6x-2y=4$$$$-9x+3y=12$$We can use substitution or elimination here. I will use elimination because I find it easier. So we can eliminator one of the variables but first I will make the coefficients of the variables of each equation the same. To do this, I will multiply the first equation by 1.5 or 3/2. So the system then becomes:$$9x-3y=6$$$$-9x+3y=12$$Now I can add the two to eliminate the variables. But we have a problem here, do you notice anything at this point? @kevincourtes

strawberry17 · Answer

54x - 18y = 36
-54x + 18y = 12
---------------
0 + 0 = 48

strawberry17 · Answer

0 = 48
0 does not equal 48, really, so the answer would be....

anonymous · Answer

@strawberry17 no solution?

strawberry17 · Answer

yes

anonymous · Answer

@strawberry17 thanks alot, can you help me with this one?

strawberry17 · Answer

do you know of GeoGebra?

strawberry17 · Answer

well, its basically an application and you can input those inequalities into the input bar and it graphs them for you..