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alexdallas
- Master | Next Rank: 500 Posts
- Posts: 108
- Joined: Sun Mar 15, 2009 2:04 pm
Hi guys
These are the 2 topics that i always feel unsure of.
Can someone please either list here all the notes relevant(if i'm missing any) to those 2 topics, or provide me with some complete links for the 2 topics?
So far, this is what i know:
LINES
y=mx + b
-i know what each variable stands for, what it means when 2 slopes are equal (parallel or coinciding lines), and what a reciprical slope means(Perpendicular lines)
-i know the formula for the slope: m = (y2-y1)/(x2-x1)
-positive slope lines pass through Q1 and q3; negative slope ones pass through Q2 and Q4.
ARITHMETIC PROGRESSIONS
-if the numbers in a set are following each other in some exact/consistent order, then the mean=the median
-the average of some consecutive numbers= (smallest+largest)/2.
These are the 2 topics that i always feel unsure of.
Can someone please either list here all the notes relevant(if i'm missing any) to those 2 topics, or provide me with some complete links for the 2 topics?
So far, this is what i know:
LINES
y=mx + b
-i know what each variable stands for, what it means when 2 slopes are equal (parallel or coinciding lines), and what a reciprical slope means(Perpendicular lines)
-i know the formula for the slope: m = (y2-y1)/(x2-x1)
-positive slope lines pass through Q1 and q3; negative slope ones pass through Q2 and Q4.
ARITHMETIC PROGRESSIONS
-if the numbers in a set are following each other in some exact/consistent order, then the mean=the median
-the average of some consecutive numbers= (smallest+largest)/2.
