Question

Help ?

Answer 1

At the state fair, Erin and her cousin ride the Ultra Drop roller coaster. When the ride plummets down the first hill, it dips below the loading platform.
At the bottom, a camera snaps the riders' picture before hurtling them back toward the sky.
The equation y=x^2-9x+20 models the roller coaster's path over time. The variable y represents height (in feet) above or below the platform. At y=0, the roller coaster is even with the platform. The variable x represents the amount of time (in seconds) since the ride began.
Factor and graph the equation to Better understand Erin's ride.
Part1: write the equation in factored form.


Part2: find the vertex of the parabola. Hint: to find the x-value of the vertex , take the average of the x-values of the x-intercepts or use the first part of the quadratic formula (x=-b/2a).

Part3: identify the intercepts
A.what are the x-intercepts ? Hint: use the equation from part 1.

B. What is the y-intercept? Hint: use the equation y=x^2-9x+20.

Part4: sketch the graph of y=x^2-9x+20. Identify the vertex and x-intercepts on your sketch.

Answer 2

(x-4)(x-5)

Answer 3

do you know how to factor?

Answer 4

What do you mean factor ?

Answer 5

ok , honestly, i cannot explain factoring over openstudy, it is literally a whole lesson

Answer 6

Oh okay

Answer 7

:( sorry

Answer 8

It's okay :)