Algebra 2 4-7 Guided Practice: The Quadratic Formula
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Last updated almost 3 years ago
19 questions
3 points
3
Question 1
1.
Video Check: Select all that apply with regards to the video embedded directly above this item.
10 points
10
Question 2
2.
Solve It! On this happy face, what quadratic functions have graphs that meet the following conditions? Consider only the domain 2 ≤ x ≤ 6.
◆ crosses the x-axis twice
◆ touches the x-axis only once
◆ misses the x-axis completely
crosses the x-axis twice
touches the x-axis only once
misses the x axis completely
3 points
3
Question 3
3.
Video Check: Select all that apply with regards to the video embedded directly above this item.
10 points
10
Question 4
4.
Take Note: You will use the Quadratic Formula many times in this course. Take the time to commit it to memory soon. Begin by entering the Quadratic Formula in the response field using the math input keyboard. Enter the formula just as it is shown in the Key Concept box.
Tip: Start by typing "x=/". [That's a forward slash.]
10 points
10
Question 5
5.
Take Note: In previous lessons you learned to solve quadratic equations using a variety of techniques. What advantage does solving them with the Quadratic Formula offer over the previous methods?
10 points
10
Question 6
6.
Problem 1 Got It?
10 points
10
Question 7
7.
Problem 1 Got It?
3 points
3
Question 8
8.
Video Check: Select all that apply with regards to the video embedded directly above this item.
10 points
10
Question 9
9.
Problem 2 Got It? In Problem 2, what is the least amount you can charge for a CD to make a $100 profit?
10 points
10
Question 10
10.
Problem 2 Got It? Reasoning: Would a negative profit make sense in Problem 2? Explain.
3 points
3
Question 11
11.
Video Check: Select all that apply with regards to the video embedded directly above this item.
10 points
10
Question 12
12.
Take Note: What is the discriminant of a quadratic function? What does it reveal about the function?
10 points
10
Question 13
13.
Take Note: Circle part of the Quadratic Formula that represents the discriminant on the canvas. Use a contrasting color.
10 points
10
Question 14
14.
Take Note: Categorize each item on the left based on the number of solutions of the quadratic function it represents.
You may need to zoom out to see all of the items. You can also place each item from the left column by selecting it (click it) then selecting (clicking on) the category for it.
b^{2}-4ac>0
b^{2}-4ac=0
b^{2}-4ac<0
No real solutions
One real solution
Two real solutions
10 points
10
Question 15
15.
Problem 3 Got It?
10 points
10
Question 16
16.
Problem 3 Got It?
3 points
3
Question 17
17.
Video Check: Select all that apply with regards to the video embedded directly above this item.
10 points
10
Question 18
18.
Problem 4 Got It? Reasoning: Will the golf ball in Problem 4 ever reach a height of 110 ft? Use the discriminant to explain your answer.
10 points
10
Question 19
19.
🧠 Retrieval Practice:
Summarize the mathematical content of this lesson. What topics, ideas, and vocabulary were introduced?
