Solve each of the following systems by graphing.?

Question

#1 .... 2x-y=4
2x-y=6

#2 .... x-2y=8
3x-2y=12

#3 .... 3x-6y=9
x-2y=3

I am having a little bit of trouble with these, can anybody help?

Answer 1

Have you ever tried to draw a graph with this text editor?
#1 is parallel lines
#2 ....
solving by elimination:
x - 2y = 8
3x - 2y = 12
2x = 4
x = 2
y = - 3
#3 ....
3x - 6y = 9
x - 2y = 3
lThese two will graph out as the same line.

Answer 2

x-2y=8 => 2y = x-8 => y = a million/2 x - 8 positioned a minimum of three distinctive values of x and get the corresponding y values. plot on graph and connect them with a at present line infinitely prolonged on the two sides. do further with the 2nd equation. the element of intersection is the element whose co-ordinates fulfill the equations. nb: 3 factors to be taken such that line growing to be to be a member of the two factors passing interior the direction of the 0.33 inevitably and sufficiently represents the equation.