Quadratic Formula
Presentation
•
Mathematics
•
10th - 12th Grade
•
Easy
Standards-aligned
Eliza Hagen
Used 2+ times
FREE Resource
9 Slides • 4 Questions
1
Multiple Choice
Bellwork:
Solve the equation for x
9=(x−5)2
x=3 and x=-3
x=2 and x=8
x=8
x=5 and x=9
2
x is squared, meaning there must be 2 "zeroes"
Some text here about the topic of discussion.
Why did we have two answers to the bellwork?
3
S
4
Where the graph touches the x-axis
AKA "x-intercept", "roots"
Recall: What is a zero?
5
Find the zeroes of
y=(x-4)2-16
algebraically
6
Multiple Choice
What are the zeroes of the function y=(x−4)2−16
(0,0) and (8,0)
(4,0) and (0,4)
(4, -16)
(0,0) and (0,8)
7
Find the zeroes of
y=(x-4)2-16
graphically
8
Find the zeroes of
y=x2-5x-14
by factoring
9
Find the zeroes of
y=x2-5x-14
by graphing
10
We then use the quadratic formula!
11
Find the zeroes of
y=x2-5x-14
using the quadratic formula
12
Multiple Choice
The value of "x" in the quadratic formula is the
y-intercept
vertex
x-intercept / zero / root
13
Fill in the Blanks
Find the zeroes of the function:
y=x2−4x+4
Type answer...
Bellwork:
Solve the equation for x
9=(x−5)2
x=3 and x=-3
x=2 and x=8
x=8
x=5 and x=9
Show answer
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Slide 1 / 13
MULTIPLE CHOICE
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