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Mathematics 7 Online
OpenStudy (anonymous):

wow it seems like no one wants to help me. thanks guys.

OpenStudy (mathstudent55):

Is there a math question?

OpenStudy (anonymous):

yes and I really need help :(

OpenStudy (mathstudent55):

Did you post it?

OpenStudy (anonymous):

yeah it was my last question

OpenStudy (mathstudent55):

I thought all your questions are closed. Is there an open one?

OpenStudy (anonymous):

Select the system of equations that corresponds to the given graph. a graph of two lines. The first passes through the points negative 1 comma 0 and 0 comma negative 2 and the second passes through the points negative 2 comma 0 and 0 comma negative 4. -2x - y = 4 2x + y = -2 -8x + 4y = -16 -4x + 2y = -8 x - 2y = 6 -2x + y = 4 2x + 3y = 6 3x + 2y = 4

OpenStudy (mathstudent55):

Where is the graph given?

OpenStudy (mathstudent55):

Oh, I see. you described the graph.

OpenStudy (anonymous):

OpenStudy (mathstudent55):

Take choice A: -2x - y = 4 2x + y = -2 Multiply the first equation by -1 2x + y = -4 y = -2x - 4 Now put the second equatin in the same form: y = -2x - 2 The y-intercepts are -2 and -4. The slopes are -2 and -2. That's exactly what the graph shows, so the answer is A.

OpenStudy (anonymous):

thank you! can you help me with one more?

OpenStudy (mathstudent55):

Yes, but pls start a new post.

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