Which equations are direct variation equations? select all that apply.
a. y = 3x
b. y = 7/x (fraction)
c. y = 5x2 ( five x squared 2)
d. y = x/9 (fraction)
e. y = .8x
f. y = 5/4x (fraction)
i need very if can

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re