Ask your own question, for FREE!
Mathematics 8 Online
OpenStudy (anonymous):

Is this correct?...

OpenStudy (anonymous):

OpenStudy (mertsj):

yes

OpenStudy (anonymous):

@Mertsj Can you help me with this problem?

OpenStudy (mertsj):

Solve each equation for y as a start.

OpenStudy (anonymous):

@Mertsj do you set x = to 0? then solve?

OpenStudy (mertsj):

I'll show the first one. Then you do the second.

OpenStudy (anonymous):

@Mertsj ok

OpenStudy (mertsj):

\[-5x+2y=-4\]

OpenStudy (mertsj):

\[-5x+2y+5x=-4+5x\]

OpenStudy (mertsj):

\[2y=5x-4\]

OpenStudy (mertsj):

\[\frac{2y}{2}=\frac{5}{2}x-\frac{4}{2}\]

OpenStudy (mertsj):

\[y=\frac{5}{2}x-2\]

OpenStudy (mertsj):

Can you do the next one?

OpenStudy (anonymous):

y=-2x+2

OpenStudy (mertsj):

-y=-2x+2 so multiply everything by -1

OpenStudy (anonymous):

@Mertsj you mean divide by 1?

OpenStudy (mertsj):

So now the system is: \[y=\frac{5}{2}x-2\] \[y=2x-2\]

OpenStudy (mertsj):

No. You had -y and we want y so you need to multiply everything by -1 since -y(-1)=y

OpenStudy (mertsj):

So now to graph. The y intercept of the first line is -2 and the slope is 5/2. ok with that?

OpenStudy (anonymous):

@Mertsj give me a sec

OpenStudy (anonymous):

@Mertsj the line is on top of eacch other

OpenStudy (mertsj):

|dw:1367201312889:dw|

OpenStudy (mertsj):

|dw:1367201613952: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!