A. complete the table if y varies directly as x or x2

My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota

If the tip varies directly with the number of guest which equation represents between the tip,t, and the number of guest,g?