Homework Help: Math

Posted by Deborah on Monday, December 17, 2012 at 1:52pm.

Sorry I posed one before this and didn't finish the problem.

42. How many solutions does the system have?

3x + 12y = 20
y = –1/4x + 5/3

A.)one
B.)two
C.)infinite
D.)none

I'm not sure what the answer is, I am bad at these.

Math - Steve, Monday, December 17, 2012 at 2:33pm
(A)

The lines have different slopes, so they are not the same line, and not parallel. They have to intersect somewhere.

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