Answer:
Step-by-step explanation:
(2,1) and (4,2) are on the line.
slope
[tex]=\frac{2-1}{4-2} =\frac{1}{2} \\[/tex]
eq. of line is
[tex]y-1=\frac{1}{2} (x-2)\\2y-2=x-2\\2y=x\\or \\x-2y=0\\[/tex]
in slope intercept form
[tex]y=\frac{1}{2} x[/tex]
