What is the function equation of the table of values when x = 0, 3, 6, 9 and y = -3, -1, 1, 3?

Provide an example of a trigonometric function and describe how it is transformed from the standard trigonometric function f(x) = sin x, f(x) = cos x, or f(x) tan x using key features.

Answer for 10 points show work you guys in advanced < 3

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.