Respuesta :

use point slope form
y-4=1/2(x-2)
distribute 1/2 to x and -2
y-4=1/2x-2/2 which is just -1
so
y-4=1/2x-1
then add 4 to both sides
y-4=1/2x-1
+4 +4
y=1/2x+3