elementry algebra
posted by andy .
use the slope intercept form to graph the equation y=2x+2

since this equation is already in the slopeintercept form, we can readily determine the slope and yintercept.
note that in slopeintercept form , y = mx + b,
m is the slope ; and
b = yintercept
thus in the given equation, y = 2x + 2
m = 2 ; and
b = 2
since yintercept is a point on the line intersecting the yaxis, you plot on the Cartesian plane the point (0,2).
then we use the slope. since slope is rise/run and the slope we got is 2, the rise/run ratio = 2/1 , meaning, you go 2 points up and then 1 point to the right. the point you should get must be (1,4)  because from (0,2), (0+1,2+2)=(1,4) . since two points determine a line, you can now plot the equation.
hope this helps~ :)