The line equation in slope-intercept form is ,
where m is the slope and b is the y-intercept.
\Write the two functions as co-ordinates
\ as
as
First find the slope
\m =
= (Substitute
and
)
= (Product of two same signs is positive)
= (Add:
)
= . (Divide:
)
The line crosses the y-axis at (0, 3). So the y-intercept is 3.
\Substitute and
in slope-intercept form line equation.
(Simplify)
The function is .