K={(2, 1), (3, 2), (4, 1), (5,3)} Is K-1 a function and why? No, each element in the domain does not have one range value.

Yes, each element in the domain has only one range value.

No, we don't know the original function and therefore can't make the determination.

Yes, each element in the range has only one domain value.

(x3 + 6x2 + 2x - 6) • (x - 1)

step-by-step explanation:

polynomial long division :

3.2     polynomial long division

dividing :   x4+5x3-4x2-8x+6

                              ("dividend")

by         :     x-1     ("divisor")

dividend     x4   +   5x3   -   4x2   -   8x   +   6

- divisor   * x3     x4   -   x3            

remainder         6x3   -   4x2   -   8x   +   6

- divisor   * 6x2         6x3   -   6x2        

remainder             2x2   -   8x   +   6

- divisor   * 2x1             2x2   -   2x    

remainder               -   6x   +   6

- divisor   * -6x0               -   6x   +   6

remainder                     0

quotient :   x3+6x2+2x-6   remainder:   0

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)