Ask your own question, for FREE!
Mathematics 20 Online
OpenStudy (anonymous):

FAN AND MEDAL***

OpenStudy (anonymous):

Choose the system of equations which matches the following graph:

OpenStudy (anonymous):

A))x + 2y = −10 3x − y = 12 B)x − 2y = −10 3x − y = 12 C)x + 2y = −10 3x + y = 12 D) x − 2y = −10 3x + y = 12

OpenStudy (anonymous):

Do you know how to solve for y in this problem? And do you have a graphing calculator?

OpenStudy (anonymous):

mmm no ;/

OpenStudy (anonymous):

To both questions?

OpenStudy (anonymous):

yes ;/

OpenStudy (anonymous):

Alright do you want me to teach you on how to get to the answer or just show steps?

OpenStudy (anonymous):

teach me how to get the answer pleaseeee

OpenStudy (anonymous):

Okay so it's telling me to see which answer choice has equations that are the same as the lines on the graph. So in order for me to find that I would have to graph each equation from the answer choice.

OpenStudy (anonymous):

its C? ;/

OpenStudy (anonymous):

Let's start with A. The equations are \[x+2y=-10\]and\[3x-y=12\]First solve for y. In order to solve for y you would have to move all of the numbers and x over to the other side of the equal's sign. For example:\[x+2y=-10\](Let's get rid of the x and move it to the other side) |dw:1438811302574:dw| Then you have to divide by 2 to get rid of the 2 next to the y. |dw:1438811397930:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!