Posted by mysterychicken on Friday, May 6, 2011 at 2:35pm.
40. The graph of the following system yields perpendicular lines.
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 5:05pm
47.
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 5:19pm
Thanks; are the other 2 correct?
MC
Answer This Question
Related Questions
 Algebra  40. The graph of the following system yields perpendicular lines. x + ...
 Algebra  Need help with these 40. The graph of the following system yields ...
 Algebra 2  Is it me or does this problem not make sense? (you can't solve it) 5...
 math 8  Martin graphed the lines for a system of equations. His graph resulted ...
 Algebra  6. y = 2x  1 and y = x + 3 ***A. (4,7) B. (7, 4) C. (7, 4) D. ...
 math  What will the graph look like for a system of equations that has no ...
 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 don't get it lol please ...
 Math  Hey i need help on my math hw i just don't get it lol please help me! ...
 geometry  Martin drew a pair of perpendicular lines and a pair of parallel ...
More Related Questions