3x - y = 9
2x + y = 6
what is the solution to this using the addition method

Add the y so they cancel out and leave you with: 5x=15

Divide the 5: x=3

Plug in the value x in any of the two equations and solve to get the value of y
(I'm picking the first one just cause)
3(3) - y = 8
Multiply: 9 -y = 9
Solve: y = 0

(3,0)

step-by-step explanation:

if a polynomial function is having a root as (-6) with multiplicity of 3 and another root of 2 with multiplicity of 4 then (x + 6) and (x -2) are the two zero factors.

roots   (-6) multiplicity 3

            (2) multiplicity 4

since multiplicity of (-6) is odd then graph will cross x axis at x = -6.

now the function has a root x = 2 with multiplicity even therefore graph will touch x axis at x = 2 and further bounces up.