Graphs intro

Views:
 
Category: Education
     
 

Presentation Description

No description available.

Comments

Presentation Transcript

Slide 1: 

Welcome to GRAPHS! (AS 2.2)

Slide 2: 

Last year for graphs (mostly achieved) (tended to be Merit/Excellence)

Slide 3: 

THIS year.... Its own topic (Co-ordinate Geometry) Mostly at achieved level

Slide 4: 

Equation types unfactorised, but simple

Slide 5: 

Equation types PARTIALLY factorised

Slide 6: 

Equation types FULLY factorised e.g. y = (x+2)(x-4)

Slide 7: 

Equation types UN-factorised

Slide 8: 

What do you do?

Slide 9: 

Firstly, know how to sketch the basic shape.

Slide 10: 

Equation types unfactorised, but simple Draw the basic shape. Vertex will just be higher or lower.

Slide 12: 

Equation types unfactorised, but simple Draw the basic shape. Multiply the vertical distances by 3

Slide 14: 

Equation types PARTIALLY factorised Draw the basic shape Use your knowledge of TRANSFORMATIONS to know where to put the vertex.

Slide 16: 

Equation types FULLY factorised Find the x intercepts (what makes y = 0) Find the vertex (halfway between x int.) Find the y intercept (by substituting x = 0) e.g. y = (x+2)(x-4)

Slide 17: 

y = (x+2)(x-4)

Slide 18: 

Equation types UN-factorised Factorise Or partially factorise (by completing the square)

Slide 19: 

If in doubt... Make a table and plot the points!