4. Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
4x – 8y = 48
11x + 3y = -105.5

Question

4. Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 
4x – 8y = 48
11x + 3y = -105.5

precal · Answer

no solution means they do not cross and are parallel
infinite means they are the same line and overlap each other

anonymous · Answer

Multiply the first equation by 11, the second equation by -4 and add them up.

precal · Answer

yes that is one approach

anonymous · Answer

-11(4x-8y=48)
4(11x+3y=105.5)
-44x+88y=-528
+44x+12y=422/100y=-106
Y=-1.06
4x-8(1.06)=48
4x+8.48=48
-8.48       -8.48
X=9.88<=4x=39.52

precal · Answer

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