Please help me i need help

Tori examined the pattern of exponents in the table. based on the pattern, which statements are true? check all that apply.

Which of the following is a function? a.) {(-2, -4/5), (-1,-,,-1)} b.) {(-2,,1/,3/,1)} c.) {(-22)} d.) {(-21)}

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?