X= {(2,4), (3, 4), (4, 4), (5, 4)} is x a function and why?
no, each set of ordered pairs in this list has the same second element
yes, there is more than one ordered pair in this list.
yes, no two ordered pairs in this list has the same first element.
no, there is a limited number of ordered pairs in this list.

Yes, no two ordered pairs in this list has the same first element.

We know that x is a function but it is not ONE-TO-ONE because the y coordinate of each point is the same or repeated.

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph