Which relation is NOT a function? A
{(a, x),(b, x),(d, z),(c, z)}

B
{(a, y),(b, y),(d, y),(c, y)}

C
{(a, x),(b, y),(a, w),(c, z)}

D
{(a, x),(b, y),(d, x),(c, z)}

the first one, all those points on the line just make a strait line.

x = 12

y = 1

for the points!

there still no table

60 for the first and 130 for the second

step-by-step explanation: