Sketching Graphs On A Calculator
Overview
The graphic display calculator turns algebra into pictures. Type in a function and you can see its shape, read values from a table, find where it crosses the axes, and pick out its highest and lowest points, all in seconds. For the International syllabus this is a core skill, not an optional extra.
In this lesson you will learn the general calculator method for each key task: sketching a graph, building a table of values, plotting points, finding zeros and turning points, finding where two graphs meet, and locating the vertex of a quadratic. The steps are described in words so they work on any model of calculator.
Objectives
- Use a graphic display calculator to: (a) sketch the graph of a function (b) produce a table of values (c) plot points (d) find zeros, local maxima or local minima (e) find the intersection of the graphs of functions (f) find the vertex of a quadratic.
Audio Lesson
Listen to this lesson in the app
Mind map
This topic is mapped out so you can see how the ideas connect.
Open the mind map in the app
Flashcards
Quick recall practice on the facts this topic is tested on.
Practise these cards in the app
Lesson Note
Complete Note Available on the Green Bridge App
Get the Green Bridge CBT app on your phone or computer for the complete IGCSE library: past papers, mark schemes, mind maps, flashcards and audio lessons.
Lesson Evaluation
Congratulations on completing the lesson on Sketching Graphs On A Calculator. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- On a graphic display calculator, a point where the graph crosses the x-axis is called a: A. vertex B. zero C. maximum D. intercept of two graphs Answer: B
- For y = x^2 - 1, what is the value of y when x = 0? A. -1 B. 0 C. 1 D. 2 Answer: A
- The single turning point of a parabola is called its: A. zero B. intersection C. vertex D. asymptote Answer: C
- For y = x^2 - 4x + 3, the calculator gives a minimum turning point at: A. (0, 3) B. (2, -1) C. (1, 0) D. (3, 0) Answer: B
- To find where two graphs meet on a calculator, you use the: A. zero option B. table option C. intersection option D. window option Answer: C
Work through these questions in the app
Work through these questions in the app
Recommended Books
Practice Mock Questions
Want to practice mock questions on Sketching Graphs On A Calculator? Download the Green Bridge CBT app to access mock questions and full practice assessments for this topic.
Download The App On Google Playstore
Everything you need to excel in your exams
