Algebra
posted by Victoria
5) How many solutions does the system of equations have?x4y=12 and 5x20y=60
A.one
B.two
C.infinitely many
D.none
6) How many solutions does the system of equations have? y6x=3 and 4y24x=16
A.one
B.two
C.infinitely many
D.none

PsyDAG
5) Multiply first equation by 5.
5x  20y = 60
6) Multiply first equation by 4.
4y  24x = 12
Subtracting first equation from the second, what does that tell you? 
Victoria
what is the answer for 5 and 6
A.one
B.two
C.infinitely many
D. none 
Victoria
I need help can someone help me.

Steve
come on. For #5, you have
5x20y=60
5x20y=60
They are the same equation. So, any solution to one is also a solution to the other.
Try a similar comparison for #6 and just think about what it means. 
Victoria
thank you so much. thanks
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