Question

How many solutions will the following system of linear equations have?

–2x + 4y = –7
http://media.education2020.com/evresources/2003-11-03-00-00_files/i0060000.jpg
A.

0
B.

1
C.

2
D.

infinite

Answer 1

@ImaGuest

Answer 2

Sorry, I'm not good at math :(

Answer 3

its fine

Answer 4

I am having trouble of my own right now too.

Answer 5

Any idea how to start?

Answer 6

You can use elimination, substitution, etc method or you can graph it as the second equation is already in equation of a straight line form, you just have to make the first one into similar form.

Answer 7

Then you can see if the line is parallel, coincidental etc, which would easily tell you how many solutions there are :P

Answer 8

A plot is attached.