10518916
Beschreibung
Mindmap von Callum Cook, aktualisiert more than 1 year ago
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Erstellt von Callum Cook
vor etwa 7 Jahre
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Relationships
- Straight Lines
- y=mx+c
- y-b=m(x-a)
- y= y co-ord
- x= x co-ord
- c= y-intercept
- m= (y2-y1) ÷ (x2-x1)
- y=mx+c
- Simultaneous equations
- Label each equation 1 and 2
- find a value that can be added or subtracted on each line to make 0 e.g. 2x and 2x on each line
- If not times the lines so they have a matching value
- take away/add the entire line to make value 0
- now simplfy the expression to find the remaining letter
- sub this value into one of the equations to find the other one
- sub this value into one of the equations to find the other one
- now simplfy the expression to find the remaining letter
- take away/add the entire line to make value 0
- If not times the lines so they have a matching value
- find a value that can be added or subtracted on each line to make 0 e.g. 2x and 2x on each line
- 7x+2y=32 (1)
3x-2y=8 (2)
(add)
10x+0=40
x=4
Sub (x=4) into (2)
3X4+2y=8
y=2
x=4 y=2
- Label each equation 1 and 2
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