Question

What is the equation of the line in slope-intercept form?

Answer 1

y= 2/1x + 0

Explanation:

So.. its 20 rise, run 10 or 20/10

Get two points from the graph (10,20) and (20,40)

y2-y1 40-20= 20

x2-x1 20-10 = 10

simplify: 2/1

2/1 is the slope, and zero is the y-intercept

Answer 2

y = 2x

Explanation:

( 0 , 0 ) ( 10 , 20)

Slope = Change in y ÷ change in x

`= (20-0)/(10-0)\\\\=(20)/(10)\\\\=2`

m= 2; (0,0)

y - y1 =m(x - x1)

y - 0 = 2(x - 0)

y = 2x