The focus of a parabola is (-3,-4). The directrix of the parabola is y=1.
What is the equation of the parabola?
0
• y=-2 (2-3)? - 3
y=*+ (x+3)2 + 3
• y=-1) (2 - 3)² +3
• y= o(x+3)2 -

In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d. what is the height of the tide after 93 hours?