Find the equation of the line that passes through the given points. (Use x as your variable.)
(2, 0), (0, −1)
step 1
Find out the slope
m=(-1-0)/(0-2)
m=-1/-2
m=1/2
step 2
Find out the equation of the line in slope-intercept form
y=mx+b
where
m is the slope
b is the y-coordinate of the y-intercept
we have
m=1/2
the y-intercept is given -----> (0,-1)
so
b=-1
substitute
y=(1/2)x-1