Coordinate Geometry 1 Flashcards
1
Q
What is the formula to work out the gradient of a line?
A
m = (y2-y1)/(x2-x1)
2
Q
What is the formula to work out the equation of a line?
A
y - y1 = m (x - x1)
3
Q
How should the equation of a line be given?
A
ax + by + c = 0
4
Q
If a line is parallel to the line given, what is the gradient?
A
Same
5
Q
If line is perpendicular to the line given, what is gradient?
A
-(1/m)
6
Q
Midpoint?
A
(x1+x2/2, y1+y2/2)
7
Q
Distance between 2 points?
A
(y2-y1)^2 + (x2-x1)^2 ALL SQUARE ROOT
