Which relation is a function?
a.
x -2 -2 0 1 8
y 3 6 0 0 9

b.
x -3 4 5 9 12
y 1 -2 -2 0 7

c.
x 3 5 7 14 14
y -9 5 -9 1 2

d.
x -7 -5 6 8 8
y -3 8 1 1 -9

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Which table represents a linear function? i'll give brainliest to first answer ^'^