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Qualification => IGCSE/ GCSE => Reference Material => Topic started by: omair on February 21, 2010, 06:41:52 pm

Title: i want help in igcse maths 0580 function graph help
Post by: omair on February 21, 2010, 06:41:52 pm

please can any one explain me all important concepts in function graph igcse

Title: Re: i want help in igcse maths 0580 function graph help
Post by: ~~~~shreyapril~~~~ on February 22, 2010, 05:32:52 am

Firs solve the function for range of values of x
suppose f(x)=3x+10
then take the range from -3<=x<=3
now u get the values as:-
x--    -3   -2   -1    0    1    2    3
f(x)-   1     4    7   10   13  16   19

now make a Cartesian plane and plot the graph x against f(x)
keep the values of x on x-axis and those of f(x) on y-axis
also keep in mind the slope of the line or gradient in 3 and y intercept that is the point where line intercepts y-axis in 10 thus the equation is in the form of y=mx+c where m=3(gradient) and c=10(y-intercept) in the above equation

hope u get it ;)