Question

PLS HELP!!!
Assume each variable has a different value. Which relations below are functions?
a. {(a, b), (a, c), (a, d), (a, e)}
b. {(a, b), (b, b), (c, b), (d, b)}
c. {(a, b), (c, d), (e, f), (g, h)}
d. {(a, a), (b, c), (c, c), (d, e)}

choice c only

choices b, c, d only

choices b and c only

choice a only

Answer 1

@Vocaloid

Answer 2

@JustSaiyan

Answer 3

@563blackghost

Answer 4

@Jebediah

Answer 5

simply select the function(s) where every x-value is unique/distinct from the others