X+2y=200 x-y= 50 What would be the first step to solve the given system for y

Multiply the second equation by -1, then add the equations together.

Step-by-step explanation:

x+2y=200  

x- y= 50

Multiply the second equation by -1 to eliminate the x

you need to show us the graph.

step-by-step explanation:

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option