Sunday

January 25, 2015

January 25, 2015

Posted by **mysterychicken** on Friday, May 6, 2011 at 2:35pm.

x + 2y = -10

-4y = 2x + 20

(True?)

47. The graph of the following system yields parallel lines.

2y = -10 + x

-4y = 2x + 20

(True)

48. The graph of the following system yields parallel lines.

x - 2y = 1

y = -3x + 10

(False)

Are these correct?

Thanks

-MC

- Algebra -
**Reiny**, Friday, May 6, 2011 at 5:05pm47.

2y = -10 + x ----> y = (1/2)x - 5

-4y = 2x + 20 ---> y = (-1/2)x - 5

one slope is 1/2 then other is -1/2, so NOT parallel

your best way is to rewrite in the form

y = mx + b like I did above.

Why are you unsure about the first one ?

- Algebra -
**mysterychicken**, Friday, May 6, 2011 at 5:19pmThanks; are the other 2 correct?

-MC

**Answer this Question**

**Related Questions**

Algebra - 40. The graph of the following system yields perpendicular lines. x + ...

Algebra 2 - Is it me or does this problem not make sense? (you can't solve it) 5...

Algebra - Need help with these-- 40. The graph of the following system yields ...

math 8 - Martin graphed the lines for a system of equations. His graph resulted ...

MATH - Post your 50 or more word response to the following in the assignment ...

Algebra II - 1) There is a solution to x = -(y-5)^2 and x = (y -5 )^2 + 7 a) ...

Math - What will the graph look like for a system of equations that has no ...

9th grade math - Hey i need help on my math hw i just dont get it lol please ...

Math - Hey i need help on my math hw i just dont get it lol please help me! Here...

Chemistry - Given that E^o = 0.52 V for the reduction of Cu+(aq) + e - (yields) ...