Thread: graph the equation

y+2x=2

Originally Posted by jjjjj

y+2x=2

Try solving so you have y=
This function is a Y=mx+b where m is the slope and b is the Y intercept

doomgaze thanks, im having trouble on how the graph should look for

y+2x=2

Originally Posted by jjjjj

doomgaze thanks, im having trouble on how the graph should look for

y+2x=2

Like I said, the best way to start is to make it a lot easier on yourself and solve so that your function has y by itself. y=
so y=2-2x or y=-2x+2 <-- this one is in perfect form of Y=mx+b


Since b=2 you know it's going to intersect the y-axis at the point (0,2) and then you use the slope m=-2/1 so you move 2 on the y-axis and then 1 on the x-axis

The graph looks like this:



Most important, do you understand what I did?

Originally Posted by jjjjj

y+2x=2

You're meant to recognise ther equation of a line. Substitute x = 0 to get the y-intercept. Substitute y = 0 to get the x-intercept.

The point is- that is a linear function so its graph is a straight line. Choose any two points on that line- the intercepts mr. fantastic chose are particularly easy- and draw the line through them.