Find the equation that represents the proportional relationship in this graph, for y in terms of x​

Which value of c would make he following expression completely factored? 8x+cy

Josephine has a great garden with and area of 2x2 + x - 6 square feet

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)