For the data in the table, tell whether y varies directly with x. If it does, write an equation for the direct variation. x y 0 0 1 4 2 8 3 12 yes; y = 4x yes; y = x + 4 no yes; y = 0.25x

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

1: 4 if the wew 35 surfboards at the beach how many were short boards?

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]