What Is The Difference Between Sketch And Draw?


It is important to know the difference between Sketch A Graph & Draw A Graph.

Sketch ==>

  • On foolscap paper
  • Best Representation of the graph
  • Less time as it reflects only the general shape of the graph.

Draw ==>

  • On graph paper
  • Accurate representation of the graph
  • More time needed as it usually involves more points on the graph
  • Curve rule/french curve is usually required.

Example:

Sketch y=-3x+1

What I will do :

  1. Find x-intercept (i.e. set y = 0)
    x=\frac{1}{3}
  2. Find y-intercept (i.e. set x = 0) y = 1
  3. Put the 2 points on the axes I have drawn on foolscap, join the 2 points, label the line.

Draw y=-3x+1

  1. Set up a table of 3 values of x choosen randomly i.e x = -1 , 0, 1
  2. Find out values of y for each value of x by substituting into the equation of the line.
  3. Plot the points on a graph paper accurately.
  4. Join the 3 points, label the line.

Good in straight line? You might want to check out how you can draw Exponential Graph here even with NO Math knowledge.

Related Post

A-Math: How to Sketch Modulus Graph This morning, I received an email from a student on asking how to draw a modulus graph with and without boundary condition. What is boundary co...
What Has My Left Palm Got To Do With Math? Palm Reading for my Destiny? Nope. I was recently doing graph topics with some students. And some were complaining how much they have to memorize u...
E-Maths: General Equation and Graphs of Line Line is part of us, in almost everything you see. You must understand what equation of line is, how to find gradient, how to find the x and...
A-Math More Trigo Graphs Another question for O Level Additional Mathematics (A-Math). On the same diagram, sketch the graphs of y=sin 3x & y=cos2x, for x between 0...
Drawing of Trigo Graphs Can you give an example of a drawing of tangent graphs? For eg, 3tan2x + 1, what does each stand for and how do i go about drawing? From the drawing,...

Hi, I'm Ai Ling Ong. I enjoy coaching students who have challenges with understanding and scoring in 'O' Level A-Maths and E-Maths. I develop Math strategies, sometimes ridiculous ideas to help students in understanding abstract concepts the fast and memorable way. I write this blog to share with you the stuff I teach in my class, the common mistakes my students made, the 'way' to think, analyze... If you have found this blog post useful, please share it with your friends. I will really appreciate it! :)

One Response to What Is The Difference Between Sketch And Draw?

Leave a reply