3/2y -3 + 5/3z when y=6 ad z=3

Which function has the same domain as y=2x

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 are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2