Find the equation of the line below (1,-2) (2,-4) *20 brainliest points* *pls help*

y= -2x

Step-by-step explanation:

First find the slope

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

   = ( -4- -2)/(2-1)

   = ( -4+2)/( 2-1)

   -2/1

  -2

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

y = -2x+b

Substitute a point into the equation

-2 = -2(1)+b

-2 = -2+b

b=0

y= -2x

include a picture of the drawing in order for me to

step-by-step explanation: