Answer
See the graph
Work Step by Step
Given: $y=2x+1$
The y-intercept is $1$. Plot a point $(0,1)$
Find the x-intercept:
$0=2x+1$
$2x=-1$
$x=\frac{-1}{2}$
Plot another point $(\frac{-1}{2},0)$.
Draw a line through 2 points.
$y=-x+1$
The y-intercept is $1$. Plot a point $(0,1)$.
Find the x-intercept:
$0=-x+1$
$-x=-1$
$x=1$
Plot another point $(1,0)$.
Draw a line through 2 points.
The red line is for $y=2x+1$. The blue line is for $y=-x+1$.
