(2,4) belongs to the graph y is greater than or equal to 4x - 5
He will reach the ground after 2.023 seconds.
To start, write a quadratic equation in vertex form with the given information about the vertex.

All that we need to solve for is a. Plug in the point (0, 9) and you will be able to solve for a and write the complete equation.
Now, just use the quadratic formula and you will get 2.023 seconds for when he hits the ground.
Write an equation to find the number of each type of ticket they should sell.Let "x" be # of adult tickets; Let "y" be # of student tickets: Value Equation: 5x+3y=450-------------------------- b. Graph your equation.y = (-5/3)x+150
c. Use your graph to find two different combinations of tickets sold.I'll leave that to you.
35 lbs, your welcome even though you probably don't need the answer anymore
M = N + 19
N - score of Nancy ; M - score of Mabel, P - score of Phoebe:
P = N - 10
P = 23
23 = N - 10
N = 23 + 10
N = 33
M = 33 + 19
M = 52
Mabel scored 52 points.