Roots and Zeros Lesson Slides: 4 Slides (Grade 9)

4 Slides • 5 Questions

1

STAAR Tips and Tricks for Solutions/Roots/Zeros

2

Solutions/Roots/Zeros

When a question asks you to find the solution, root, and/or the zero, all three mean the same.

3

The solutions/roots/zeros are the x-values where the function crosses the x-axis. In this example, the solutions/roots/zeros are -2 and 2. This is the function $f\left(x\right)\ =\ x^2-4$ .

4

Multiple Choice

What are the approximate zeros for this function?

1

-2 and 2

2

-1 and 1

3

-1.4 and 1.4

4

-1.8 and 1.8

5

Some functions will be in the form of an equation. This is a tip/trick for finding them with Desmos.

Make sure $f\left(x\right)$ or $y$ must be alone on one side of the equation.
Sometimes the problem will not have either of those, but a $0$ instead. e.g. $3x^2-4x-9=0$
If this is the case, you will graph the equation as $y=3x^2-4x-9$
If you have an equation with multi-term expressions on both sides, e.g. $-3x^2+2x=26$ ,you must solve for $0$ , e.g. $-3x^2-2x-26=0$ , and graph it as $y=-3x^2-2x-26$ .

6

Fill in the Blanks

What is one of the roots of $-4x^2=-2x-7$ ? Round to the nearest tenths.

Type answer...

7

Fill in the Blanks

What is one of the solutions of $g\left(x\right)=x^2-5x-2$ ? Round to the nearest tenths.

Type answer...

8

Fill in the Blanks

What is one of the zeros for $-10x^2-12x+9=0$ ? Round to the nearest tenth.

Type answer...

9

Fill in the Blanks

What is one of the zeros for $5x^2-3y=12$ ? Round to the nearest tenth.

Type answer...

STAAR Tips and Tricks for Solutions/Roots/Zeros

Show answer

Auto Play

Slide 1 / 9

SLIDE

Similar Resources on Wayground

8 questions

Symmetry

Presentation

•

10th Grade

8 questions

Standard Form to Scientific Notation

Presentation

•

8th Grade

9 questions

Introduction to Linear Functions

Presentation

•

9th Grade

7 questions

Symmetry

Presentation

•

9th - 10th Grade

10 questions

Solving a System of Equations using Substitution

Presentation

•

9th Grade

6 questions

Rotations on a Coordinate Plane

Presentation

•

8th Grade

9 questions

Writing an equation given two points

Presentation

•

8th - 9th Grade

8 questions

Lesson 9.1: Solving quadratics by graphing

Presentation

•

9th Grade

Popular Resources on Wayground

10 questions

Safety Day 2026 – Student Review

Quiz

•

9th Grade

21 questions

Continents and Oceans

Quiz

•

6th Grade

20 questions

Parts of Speech

Quiz

•

5th Grade

16 questions

Subject & Predicate

Quiz

•

5th Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

12 questions

Map Skills

Quiz

•

3rd Grade

22 questions

Continents and Oceans

Quiz

•

5th Grade

15 questions

Rounding Decimals

Quiz

•

5th Grade

Discover more resources for Mathematics

12 questions

Absolute Value Equations

Quiz

•

9th Grade

20 questions

Function or Not a Function

Quiz

•

8th - 9th Grade

11 questions

Slope from 2 points

Quiz

•

8th - 9th Grade

10 questions

Exploring the Basics of Exponents

Interactive video

•

6th - 10th Grade

10 questions

Solving Absolute Value Equations

Quiz

•

9th Grade

18 questions

SB 12.2 Write in point slope form

Quiz

•

9th Grade

12 questions

Identify Rigid Transformations

Quiz

•

8th - 12th Grade

10 questions

Complementary, Supplementary, Vertical, and Linear Pairs

Quiz

•

9th - 12th Grade