Which of the following relations describes a function? A. { (0, 0), (0, 2), (2, 0), (2, 2) }
B. { (2, 2), (2, 3), (3, 2), (3, 3) }
C. { (2, -1), (2, 1), (3, -1), (3, 1) }
D. { (-2, -3), (-3, -2), (2, 3), (3, 2) }

D. { (-2, -3), (-3, -2), (2, 3), (3, 2) }

Step-by-step explanation:

the x values don't repeat

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.