Math

1. How many solutions does the system of equations have?
4x=-12y+16 and x+3y=4
A. One
B. Two
C. Infinitely many
D. None

2. How many solutions does the system of equations have?
Y=5x+7 and 3y-15x=18
A. One
B. Two
C. Infinitely many
D. None

3. How many solutions does the system of equations have?
x-2y=6 and 3x-6y=18
A. One
B. Two
C. Infinitely many
D. None

4. How many solutions does the system of equations have?
y-7x=-14 and 7y-49x=-2
A. One
B. Two
C. Infinitely many
D. None

My answers are: A C D A

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  1. #1
    Note that
    x+3y=4
    can be rewritten as
    4x=-12y+16
    so both lines are the same, so C

    #2 Y=5x+7
    can be written as
    3y-15x=21
    So, the two lines are parallel: D

    #3 x-2y=6
    is
    3x-6y=18
    So, it's the same line: C

    #4 y-7x=-14
    is
    7y-49x=-98
    so, D

    Looks like you need some further study on these.

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  2. I'm sure a math tutor will help you sometime this evening.

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    Ms. Sue
  3. looks like you should have been studying instead of waiting for someone to do them for you.
    Still, maybe what I showed you will help.

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  4. I'm not good at these things. Usually I am a fast learner, but this year has been really hard. Thank you!

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  5. Yes, it has helped

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  6. Ms. Sue, I'm not trying to be rude or anything, but it's a little late for a tutor today. Maybe you meant some other day, I'm not sure, but just in case.

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  7. 6:30 p.m. is a normal homework time. I'm sorry if it's too late for you.

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    👤
    Ms. Sue
  8. Our tutors are usually here until midnight and some insomniacs sometimes post responses all through the night.

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    👤
    Ms. Sue
  9. nobody likes you ms sue

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  10. fact

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  11. Ms. Sue, did you ever think that people might be in a different time zone than you?

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