Which sets of ordered pairs represent a function? Select all that apply. A. {(-1,5), (2,8),(0,6), (-2,4)}
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B. {(-2, 1), (0, 3), (-1, 1), (1, 2)}
c. {(0, 0), (2, 3), (0, -1), (-1, -2)}
OD. {(-2, 2), (-1, 1), (0, 2), (1, -1)}
E. {(2, 4), (1, 8), (-1, -2), (2, -1)}.

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

the answer will be b x² +x-1

step-by-step explanation:

b. f(x) = –√x + 3this is the correct answer