MATH-054-T004: Secondary Mathematics 2, Part 2
Self Check: Graphing Quadratic Equations
If you have found cool resources related to the lesson, post them in the course wiki. If you would like to talk about this lesson with your peers, or if you are having trouble, make a post on the discussion board.
This exercise will help you check your knowledge. This Self Check is dynamic. The questions will change every time you start the quiz. Please take it as many times as you need to master the concepts. It will not count toward your course grade, but will help you master the material.
Click Start to begin.
Note: If there are short-answer or essay questions, your answer will automatically be marked correct regardless of how you respond, so please compare your answer with the feedback to make sure you know the correct answerl
Situation 1
Suppose a diver jumps from a ledge that is 115 feet above the ocean and the initial upward velocity is 8 feet per second. The vertical motion of the diver can be modeled by the function h=-t2 + 8t+ 115. How long wil it take until the diver enters the water? How do you know?
Situation 2
A. Nicholas paints a masterpiece on a canvas such that the width is 6 inches longer than its height. What would be the equation for the area of his canvas (written in simplified form)?
B. Nicholas added a 4-inch silver frame. around all sides of his painting. What would be the new equation for the area of his canvas with the frame. (written in simplified form)?
C. Nicholas ended up not liking the silver frame. and replaced it with a gold frame. The area of the painting with the new frame. can be represented with the polynomial h2+12h + 27, where h represents the height of the painting. Determine the width of the new gold frame.
Situation 3
Jarom is working for a landscaping company and is responsible for building the stone border around a rectangular pond. The pond measures 6 meters by 15 meters. The manager told Jarom that the budget only allowed enough stone for 46 square meters and to make the stone border as wide as possible. How wide can the border be?
Discussion Board
Choose a situation to discuss and make sure to answer all the questions. To get full credit, please do the following:
Post your answers for the situation as a new thread, then make comments on at least two other student posts.
include key features of quadratic equations (identifying the type of equation, vertex, direction, intercepts, axis of symmetry, how you got solutions, etc.)
As you use this discussion board be aware that the following things are prohibited:
Use of offensive or derogatory language
Bullying behavior.
Discussion of topics unrelated to the exploration
Sharing contact information such as phone number, physical address, email address, Facebook address, twitter account, etc.
