What is the y-intercept of the line y=20x

Answer 1

since there is no "b" term in the equation y = mx + b, that means that b = 0

so the y-intercept in this scenario is just 0 :)

Answer 2

The slope-intercept form of the equation of a line is: y = mx + b

where:

m = slope

b = y-intercept [the place where x=0]

So the line

y = 20x + 0

has

a slope of 20

a y-intercept of 0 [0,0]

it goes through the Origin