Question 259756
Graph each equation. let x= -3,-2,-1,0,1,2,3 
y=2x+1
 x       y
-3      -5
-2      -3
-1      -1
 0       1   (y-intercept or vertical-intercept or b=1 or b=(0,1))
 1       3
 2       5
 3       7   
(all these values rise 2 for every run of 1, rise/run=2/1=2=slope=m)
{{{ graph( 300, 200, -10, 10, -10, 10, 2x+1 ) }}}