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### We found 1,726 resources with the concept functions

Lesson Planet

#### Ex: Constructing a Function

This video explores a basic linear cost equation. Given a rate-per-photo and a fixed-one time cost, write a function that represents the amount a customer would pay for x number of photos.

Lesson Planet

#### Functions (Part III)

Sal draws a graphical representation of a function, f(x), and builds and evaluates other functions based that function.

Lesson Planet

#### Functions (Part 4)

An example sent by a listener is explored in this video on functions. Here, you are given the composite function and one function, and you need to find the other function.

Lesson Planet

#### Linear, Quadratic, and Exponential Models

Viewers play a game with Sal, in which he presents three different data sets that come from either linear, quadratic, or exponential functions. In solving this puzzle, Sal manages to not only provide a strong definition of each function,...

Lesson Planet

#### Solving a Quadratic by Factoring

Solving quadratics by factoring is the main concept in this video. Several examples are shown with positive numbers and with negative numbers. The instructor demonstrates how to set the factored equation to zero to solve the quadratic....

Lesson Planet

#### Introduction to Function Inverses

Starting from a brief look at functions and the mapping of domains to ranges, Sal starts out with an intuitive sense of what a function inverse is. He then, using an example, shows how to find the inverse of a function and also shows how...

Lesson Planet

#### What is the domain of a function?

After defining a simple function from a word problem, a short videoÂ shows how one could find the domain and the range of that function. The instructionÂ reinforces the definitions of domain and range with a concrete example.

Lesson Planet

#### SAT Prep: Test 5 Section 7 Part 6

Give your students the edge on their upcoming SAT with this video, which covers algebraic and linear equations. Math students who have a hard time transitioning between skills would benefit from seeing Sal do so.

Lesson Planet

#### Constructing Linear Equations to Solve Word Problems

Sal takes your classâ€™ newfound (or growing) knowledge of graphs of lines to the next level. He presents a few word problems in which mathematicians need to understand how to use linear function graphs.

Lesson Planet

#### SAT Prep: Test 4 Section 8 Part 2

Young mathematicians will appreciate Sal's careful - yet efficient - methods for solving these typical SAT problems. He takes care to explain problems 8-12, but gets cut off in the middle of problem 12 (to be continues in the next video).

Lesson Planet

#### SAT Prep: Test 8 Section 5 Part 4

If your math students are having a hard time with graphing and slopes, this video could be a great resource as they prepare for the SAT. Sal takes care in explaining his thought process, making sure where to note different strategies to...

Lesson Planet

#### SAT Prep: Test 7 Section 5 Part 3

Choosing the "quick and dirty" method of solving problems rather than more mathematically complicated, Sal shows students the importance of time management when taking the SAT (or other math tests). He still arrives at correct answers,...

Lesson Planet

#### SAT Prep: Test 1 Section 3 Part 4

Pushing through to problems 11-12 on page 398 of The Official SAT Study Guide, Sal goes into comprehensive detail on each problem. Problem 11 involves geometry, including the function of pi, and problem 12 involves non-constant slopes....

Lesson Planet

#### SAT Prep: Test 4 Section 2 Part 5

Picking up where he left off (problem 17), Sal demonstrates graphing functions with an informative and clear explanation. Additionally, problem 18 involves finding the values of angles in an equilateral triangle.

Lesson Planet

#### SAT Prep: Test 6 Section 9 Part 3

Working through problems 11-14 on the practice SAT, Sal shows students how to solve problems that look complicated, but can actually be quite simple. Problems involving algebraic expressions and geometric distances make up the rest of...

Lesson Planet

#### SAT Prep: Test 3 Section 4 Part 3

Continuing his lessons on the practice SAT, Sal takes students through problems 10-13, which involve absolute value, comparing angles in a geometric diagram, and finding the median number in a set of consecutive integers. Students will...

Lesson Planet

#### SAT Prep: Test 5 Section 9 Part 4

Graphing skills are a focus of this video, making it ideal for students who have a hard time using slopes and functions. Additional problems involve visualization, geometric figures, and algebraic factoring.

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#### SAT Prep: Test 6 Section 7 Part 2

Helping students realize the common missteps in solving the average SAT problem, Sal creates a lens through which students can clearly see the correct and incorrect approach to each type of problem. He points out what a student might...

Lesson Planet

#### SAT Prep: Test 6 Section 7 Part 3

Sal finishes problem 10 in this video, as well as problems 11-13 on page 735. Students can practice skills such as linear functions, slopes, and calculating permutations. Problem 12 allows viewers to see the process of elimination in...

Lesson Planet

#### SAT Prep: Test 4 Section 2 Part 2

Sal clarifies that doing a math problem the correct way isn't really the correct way to do it on the SAT. If students find this statement confusing, they will understand Sal's point after watching him work quickly and efficiently through...

Lesson Planet

#### SAT Prep: Test 3 Section 2 Part 1

Starting a new set of SAT practice problems from The Official SAT Study Guide (page 518), Sal takes students through some straightforward questions involving basic algebra and functions. However, as every math teacher and student knows,...

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#### SAT Prep: Test 1 Section 3 Part 5

Sal's lecture starts where his last one ended - on problem 13 from The Official SAT Study Guide. Starting the problem over to ease understanding, he explains how to find the pattern in a complicated sequence. The following problem...

Lesson Planet

#### SAT Prep: Test 3 Section 8 Part 4

Fans of algebra, geometry, and hamsters will enjoy this video, which finishes this practice test with problems 15-16. Sal carefully, methodically, and efficiently takes students through the necessary steps for solving increasingly...

Lesson Planet

#### SAT Prep: Test 5 Section 3 Part 6

A potentially scary equation ends this practice session. However, it is no match for Sal's mathematical prowess. And once they watch him make the complicated methodology simple, your students will feel more confident in their own...