Question

I could use some help understanding thiss one please: Solve the linear system of equations 3x-2y=7 9x-6y=14

The choices are:
A) 6,-4
B) 8,5
C) t,8t+5
D) No Solution

I know it isn't A or B, but before I choose D, how do I do this with Choice C?

Answer 1

PS- A and B are "Uniqe solutions" C is "Infinitely many solutions" if that means anything...

Answer 2

Can you put them both into slope intercept form?

Answer 3

I have no idea

Answer 4

Please be aware, I suck at anything Math...lol

Answer 5

Slope intercept form is the form y=mx+b, putting both of them in that form we have

First one:
3x-2y=7
-2y=-3x+7
y=3/2x-7/2

second one:
9x-6y=14
-6y=-9x+14
y=3/2x-7/3

you can now see the lines have the same slope, and are therefore parallel which means they will never intersect. There is no solution

Answer 6

Ok, I remember that formula now...lol However, how did you get y=3/2x-7/2?

Answer 7

sorry, I just don't see how "C"" is in there...

Answer 8

????