Coordinates, Points And Lines Flashcards
1
Q
What’s the formula for finding the distance between two points?
A
Square root / (x2-x)squared + (y2-y)squared
2
Q
How do you find the mid point of a line?
A
(X+x2 divided by 2 , y+y2 divided by 2)
3
Q
What is the formula for the gradient of a line?
A
Y2-y divided by x2-x
4
Q
What is the equation of a straight line?
A
Y-y2=m(x-x2)
5
Q
What is the parallel gradient of a line?
A
The same gradient as the other line
6
Q
What is the perpendicular gradient of a line?
A
The negative reciprocal of the gradient of the other line
7
Q
What is the proof for the perpendicular line gradient?
A
M multiplied by - 1/m =-1
