Question

16. What is the equation in slope-intercept form of a line

passing through points (0,0) and (2, 4)?

Answer 1

Explanation:

y=mx+b where m is the slope and b is the y intercept. Since there is point (0,0) we know that b=0 so we only need to find m

m=(y2-y1)/(x2-x1)

m=(4-0)/(2-0)=4/2=2 so the line is

y=2x

Answer 2

y= 2x

Explanation:

(0,0) and (2, 4)

m= (y2-y1)/ (x2-x1)

m= (4-0)/(2-0)

m= 4/2

m=2

y- y1= m(x -x1)

y - 4= 2(x - 2)

y-4= 2x - 4

y= 2x