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help!! plz

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~Dazzling Star~:
 i just joined a new school in my 2nd year of IGCSE and it turns out that they have finished man topics that i haven't in math and chemistry,and these are the topics:
math:
1.straight line graphs :
-finding the equation of a line
-the mid coordinats....
-etc.....
2.graphing functions?!!?!
i have no idea what to do here :o :( :-\

chemistry:
1.drawing do and cross formulas
2.titration??(and calculations involved in it)
3.acids and bases (tell me what i need to know)
4.oxides?
5.chemical calculations

i will really appreciate it if anyone follows up with me throughout these portions especially in chemistry !!!
plz plz plz help me

elemis:
The general equation of a line is  y = mx +c

Where m = gradient c = y intercept (the y coordinate of the point where it intersects with the y axis).

The mid coordinate is given by this formula :
 
This gives the x coordinate

This gives the y coordinate

Deadly_king:

--- Quote from: ~Dazzling Star~ on October 05, 2010, 04:13:47 pm --- i just joined a new school in my 2nd year of IGCSE and it turns out that they have finished man topics that i haven't in math and chemistry,and these are the topics:
math:
1.straight line graphs :
-finding the equation of a line
-the mid coordinats....
-etc.....
2.graphing functions?!!?!
i have no idea what to do here :o :( :-\

chemistry:
1.drawing do and cross formulas
2.titration??(and calculations involved in it)
3.acids and bases (tell me what i need to know)
4.oxides?
5.chemical calculations

i will really appreciate it if anyone follows up with me throughout these portions especially in chemistry !!!
plz plz plz help me

--- End quote ---

This might help for chemistry :
http://www.s-cool.co.uk/gcse/chemistry/acids-and-alkalis.html

Maths :
http://www.s-cool.co.uk/gcse/maths/graphs.html

However these are GCSE notes. So I would advice you to chose only what you need and neglect what is not required in your syllabus :)

Freaked12:
Straight line graphs are the easiest part in IGCSE curricula and same is the case with acids and bases.
Just give us a few questions and you will get the idea when we solve them

~Dazzling Star~:

--- Quote from: Ari Ben Canaan on October 05, 2010, 04:17:55 pm ---The general equation of a line is  y = mx +c

Where m = gradient c = y intercept (the y coordinate of the point where it intersects with the y axis).

The mid coordinate is given by this formula :
 
This gives the x coordinate

This gives the y coordinate

--- End quote ---
can i use any coordinates regarding x1 x y1 &y2??
and i donot understand what an intercept is could u explain again

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