Quadratic Equations

Presentation

•

Mathematics

•

9th Grade

•

Medium

•

CCSS

HSA-REI.B.4B, HSF-IF.C.7A, 8.EE.A.2

Standards-aligned

Danielle B

Used 555+ times

FREE Resource

2 Slides • 12 Questions

Quadratic Equations

Solving

We want to find the solutions
Where the quadratic crosses the x-axis
Use DESMOS to graph!!!

Multiple Select

What can the roots to a quadratic equation be called?

zeros

solutions

x-intercepts

none of the choices

Multiple Choice

What are the green dots called?

axis of symmetry

vertex

parabola

roots or x-intercepts

Multiple Choice

What are the x- intercepts?

x= 0 and x= -4

x= 0 and x= 4

y= 0

x= 2

Multiple Choice

Solve the following quadratic equation: $5x^2=10x$

$x=-2$

$x=2$

$x=2$ & $x=0$

$x=-2$ & $x=0$

Multiple Choice

Solve the following quadratic equation: $4x^2-9=0$

$x=\frac{3}{2}$ & $x=-\frac{3}{2}$

$x=\frac{2}{3}$ & $x=\frac{-2}{3}$

$x=\frac{9}{4}$

$x=\frac{4}{9}$

Multiple Choice

Solve

x² + 2x - 20 = 4

x = -6, x = 4

x = 6, x = -4

x = 12, x = -2

x = 8, x = -3

Multiple Choice

Solve for the values of x:
(x + 2)(x - 3) = 0

{ 2, 3 }

{ -2, -3 }

{ 2, 3 }

{ -2, 3 }

Multiple Choice

Solve by factoring: x² + 3x - 18 = 0

x = -3 and x = 6

x = 3 and x = -6

x = -9 and x = 2

x = 9 and x = -2

Multiple Choice

Solve by factoring: x² - 9x + 20 = 0

x = -4 and x = -5

x = 20 and x = -9

x = 4 and x = 5

x = -4 and x = 5

Multiple Choice

Solve Using the Quadratic Formula
x² + 4x - 40 = -8

-10 & -4

-4 & 10

-8 & 4

8 & -4

Multiple Choice

Solve by factoring: x² = 7x + 18

-7 and -18

9 and 2

9 and -2

2 and 7

Multiple Choice

$x^2-7x=0$

Solve by the method of your choice.

x = 7 only

x = 0 only

x = 0 and 7

There is no real answer for this equation.

Quadratic Equations

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