Definition: in a direct proportion y = kx, the number k is called the constant of

Which statements are true? see picture

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)

Identify the number as a rational or irrational.explain. 127