Question

Express each of the ff by means of an equation where k represents the constant variation.

1.) The cost (c) of chicken varies directly as its weight (w)
2.)The circumference (C) of a circle varies directly as the length of its diameter (d)
3.)Water pressure (P) varies directly as the height (h) of the water
4.)The income (I) of a worker earning k pesos per hour varies directly as the number of hours (h) he works.