The following is a list of everything you need to know to be able to complete a question on the line:
Distance: |
Midpoint: |
Slope: |
1. Rearrange the equation of the line to suit the formula
2. If given the two points use:
Equation of a line: |
You need the slope and one point on the line
Parallel lines |
m1 = m2
Perpendicular lines |
m1 * m2 = -1
Intersection of lines |
Use simultaneous equations and eliminate x or y. Don't forget to find the second value.
REMEMBER
If the line intersects the x-axis then y=0
If the line intersects the y-axis then x=0
Show that a point is on a line: |
Sub the given point into the equation
Area of a Triangle: |
Translate one of the points to (0,0) so that you end up with the points (0,0) (x1,y1) (x2,y2). Use the formula below.
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