straight lines Flashcards
1
Q
equation for gradient
A
y2-y1
——-
x2-x1
2
Q
equation for midpoint
A
(x1+x2 , y1+y2)
(. 2. 2. )
3
Q
proof - square
A
4 equal sides
1 right angle
4
Q
proof - rectangle
A
2 pairs of opposite equal sides
1 right angle
5
Q
proof - kite
A
2 pairs of adjacent equal sides
6
Q
proof - rhombus
A
4 equal sides
non right angled
7
Q
proof - parallelogram
A
2 pairs of parallel lines
8
Q
proof - trapezium
A
only 1 pair of parallel lines
9
Q
perpendicular gradient — multiplied will equal what?
A
-1
10
Q
what is the perpendicular gradient of something
A
negative reciprocal
11
Q
when sketching a graph which two features should be included?
A
- graph shape
- axis intercepts labelled
12
Q
equation for a straight line
A
y - y1 = m ( x - x1 )
