Question

write an equation for each line

Answer 1

y=mx+n is the general equation for lines

Answer 2

slope=2;(2,1)

Answer 3

y=mx+n
slope=m=2
so y= 2x+n
put (x,y)=(2,1)
1=2*2+n => n=-3
y=2x-3 (m=2 and n=-3)

Answer 4

thxs