Let’s recap on these graphs. Are they your friends or foes? A)Straight Line : y = mx + c In the straight line equation: y = mx + c: 'x' and 'y' are the coordinates of the points that satisfy the function and so lie on the straight line graph. 'm' is the gradient of the straight line graph, and 'c' is the 'y intercept' of the straight line graph. Recap : Play these two games Game 1: http://hotmath.com/hotmath_help/games/ctf/ctf_hotmath.swf Game 2: http://hotmath.com/hotmath_help/games/kp/kp_hotmath_nosound.swf Hope you have fun here! Task 1: Take this short quiz and check on your understanding of straight lines. Click on this url : http://www.mathsisfun.com/quiz/linear_equation_test.html Remember your score for this quiz. Country Note: || In the US, Australia, Canada, Egypt,Mexico, Portugal and Philippines the notation is:

y = mx + b

In the UK, Australia (also), Bahamas, Bangladesh, Belgium, Brunei, Cyprus, Germany, Ghana, India, Indonesia, Ireland, Jamaica, Kenya, Kuwait, Malaysia, Malawi, Malta, Nepal, Netherlands, New Zealand, Nigeria, Pakistan, Singapore, Solomon Islands, South Africa, Sri Lanka, Turkey, UAE, Zambia and Zimbabwe

y = mx + c

In Albania, Brazil, Catalonia, Czech Republic, Denmark, Ethiopia, France, Lebanon, Holland, Kyrgyzstan and Viet Nam:

y = ax + b

In Azerbaijan, China, Finland, Russia and Ukraine:

y = kx + b

In Greece:

ψ = αχ + β

In Italy:

y = mx + q

In Japan:

y = mx + d

In Latvia:

y = jx + t

In Romania:

y = gA + C

In Sweden:

y = kx + m

In Slovenia:

y = kx + n

B)Quadratic Curve : y = ax2 + bx + c
Explore this quadratic applet : http://www.mathopenref.com/quadraticexplorer.html Task 2:
a) How will a, b and c affect the graph?
b) Look carefully at this graph below, what can you say about this graph? Comment on the sketch and can you deduce the equation for this graph?

A)Straight Line :y= mx+ cIn the straight line equation: y = mx + c:

'x' and 'y'are the coordinates of the points that satisfy the function and so lie on the straight line graph.'m' is the gradientof the straight line graph, and'c' is the 'y intercept'of the straight line graph.Recap :

Play these two games

Game 1: http://hotmath.com/hotmath_help/games/ctf/ctf_hotmath.swf Game 2: http://hotmath.com/hotmath_help/games/kp/kp_hotmath_nosound.swf

Hope you have fun here!

Task 1:Take this short quiz and check on your understanding of straight lines.

Click on this url : http://www.mathsisfun.com/quiz/linear_equation_test.html

Remember your score for this quiz.

Country Note:|| In the

US,Australia, Canada, Egypt,Mexico, Portugal and Philippinesthe notation is:UK, Australia (also), Bahamas, Bangladesh, Belgium, Brunei, Cyprus, Germany, Ghana, India, Indonesia, Ireland, Jamaica, Kenya, Kuwait, Malaysia, Malawi, Malta, Nepal, Netherlands, New Zealand, Nigeria, Pakistan, Singapore, Solomon Islands, South Africa,Sri Lanka,Turkey, UAE, ZambiaandZimbabweAlbania, Brazil, Catalonia, Czech Republic, Denmark, Ethiopia, France, Lebanon, Holland, KyrgyzstanandViet Nam:Azerbaijan, China,Finland,RussiaandUkraine:Greece:Italy:Japan:Latvia:Romania:Sweden:Slovenia:B)Quadratic Curve :y= ax2+ bx+ cExplore this quadratic applet : http://www.mathopenref.com/quadraticexplorer.html

Task 2:a) How will a, b and c affect the graph?

b) Look carefully at this graph below, what can you say about this graph? Comment on the sketch and can you deduce the equation for this graph?

Click on this link and input your findings? http://linoit.com/users/angcc/canvases/3V2%282011%29

Do you still remember how to create a geogebra applet for this?

C)Cubic Curve :y=ax3+bx2+cx+dClick on this link to discover more about cubic graphs. http://www.bbc.co.uk/schools/gcsebitesize/maths/algebra/furthergraphhirev1.shtml

Explore on this cubic applet : http://www.mathopenref.com/cubicexplorer.html

Task 3 :If you are asked to 2

x3 +x2 - 18x- 9 = 0 on graph, how will you approach it? Click here to input your solution.http://linoit.com/users/angcc/canvases/3V2%282011%29

If you still have doubt on cubic graphs, you may explore on this cubic applet : http://www.mathopenref.com/cubicexplorer.html