# Algebra

posted by Victoria

5) How many solutions does the system of equations have?x-4y=12 and 5x-20y=60
A.one
B.two
C.infinitely many
D.none
6) How many solutions does the system of equations have? y-6x=-3 and 4y-24x=-16
A.one
B.two
C.infinitely many
D.none

1. 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?

2. Victoria

what is the answer for 5 and 6
A.one
B.two
C.infinitely many
D. none

3. Victoria

I need help can someone help me.

4. Steve

come on. For #5, you have

5x-20y=60
5x-20y=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.

5. Victoria

thank you so much. thanks

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