Question

Solve systems by graphing method.

SO like,

y=-3x

I would start at 1 then move 3 over 1 on the graph?

then x=-1 I would just put a line thru -1?

Answer 1

w0t? what is there to solve again?

Answer 2

Solve systems by graphing method:

I have

y=-3x
and
x=-1

Answer 3

ohh I see, 2 equations... so you graph them both
where both of them meet, those coordinates are the "solution"

because at that point, "x" and "y" for one equation, will be equals to the "x" and "y" for the other equation

Answer 4

y = -3x

let's graph that

is a line, so all you need for that is 2 points really, so let's get 2 "x" values

x = 0 => y = -3(0) => y = 0 ( 0, 0 )
x = 2 => y = -3(2) => y = -6 ( 2, -6 )

Answer 5

now let's graph x = -1

Answer 6

so as you can see, x = -1 is just a vertical line where "x" is always -1

so let's use x = -1 for say y = -3x

x = -1 => y = -3(-1) => y = 3

Answer 7

Oh so I just would plug in -1 to the y=-3x and then just graphed it?

Answer 8

yeap

Answer 9

Thanks after staring at it for awhile I finally understood :D

Answer 10

yw