Question

How would I figure out what equation of a line that contains the origin and the point (1,2).?

Answer 1

y=mx+b where m is the slope and b is the y intercept

Origin: (0,0) Point: (1,2)
Slope: \[(y _{2}-y _{1})/(x _{2}-x _{1})=m\]
2-0/1-0=m
2/1=m
2=m

b=0

y=2x

Answer 2

y= mx+b is suppose to be a formula.?