Math Focus: Intro to Quadratic Equations
Presentation
•
Mathematics
•
8th - 9th Grade
•
Practice Problem
•
Medium
Standards-aligned
Jamaica Ortega
Used 66+ times
FREE Resource
10 Slides • 8 Questions
1
Intro to Quadratic Equations
(LM 27_Math Focus 1-2)
2
Lesson GOALS:
Identify quadratic equation.
Write quadratic equations in standard form.
Identify a, b and c.
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4
Identifying the terms of a quadratic equation
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Observe how the values of a, b and c are identified in the given quadratic equation in this illustration.
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Open Ended
Why should a=0 in a quadratic equation of the form ax2+bx+c=0 ?
Elaborate on what happens to the equation when a = 0.
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8
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Multiple Select
Activity 2 (1-5): Quadratic Or Not
Identify which of the following equations are quadratic and which are not.
(Choose all equations that are quadratic equations.)
3m+8=15
x2−5x+10=0
12−4x=0
2t2−7t=12
6−2x+3x2=0
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Quadratic Equations for Nos. 1-5
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Multiple Select
Activity 2 (6-10): Quadratic Or Not
Identify which of the following equations are quadratic and which are not.
(Choose all equations that are quadratic equations.)
25−r2=4r
3x(x−2)=−7
21(h−6)=0
(x+2)2=0
(w−8)(w+5)=14
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Quadratic Equations for Nos. 6-10
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Multiple Choice
Activity 3: Set Me to Your Standard
Identify the equivalent quadratic equation in standard form of the given. Also, correctly identify the values for a, b and c.
1. 3x−2x2=7
−2x2+3x+7=0;
a=−2, b=3, c=7
−2x2+3x−7=0;
a=−2, b=3, c=−7
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Multiple Choice
Activity 3: Set Me to Your Standard
Identify the equivalent quadratic equation in standard form of the given. Also, correctly identify the values for a, b and c.
2. 5−2x2=6x
−2x2−6x+5=0;
a=−2, b=−6, c=5
−2x2+6x+5=0;
a=−2, b=6, c=5
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Multiple Choice
Activity 3: Set Me to Your Standard Identify the equivalent quadratic equation in standard form of the given. Also, correctly identify the values for a, b and c. 3. (x+3)(x+4)=0
x2+7x+12=0;
a=1, b=7, c=12
x2+x+12=0;
a=1, b=1, c=12
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Multiple Choice
Activity 3: Set Me to Your Standard
Identify the equivalent quadratic equation in standard form of the given. Also, correctly identify the values for a, b and c.
4. (2x+7)(x−1)=0
2x2+6x−7=0
a=2, b=6, c=−7
2x2+5x−7=0;
a=2, b=5, c=−7
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Multiple Choice
Activity 3: Set Me to Your Standard
Identify the equivalent quadratic equation in standard form of the given. Also, correctly identify the values for a, b and c.
5. 2x(x−3)=15
2x2−6x+15=0
a=2, b=−6, c=−15
2x2−6x−15=0;
a=2, b=−6, c=−15
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Congratulations!
You have accomplished this introductory lesson on Quadratic Equations!
Continue reading Module 27 on how to Solve Quadratic Equations.
Don't forget to click TURN IN, as you have accomplished this lesson.
Intro to Quadratic Equations
(LM 27_Math Focus 1-2)
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