Heyy can some one pls helpp?

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

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)

What is the greater volume 72 quarts or 23 gallons