Gradients, lines and midpoints Flashcards
1
Q
What is the formula for gradient?
A
y2 - y1
———. = gradient
x2 - x1
2
Q
What is the formula for midpoint of two points?
A
x1 + x2. y1 + y2
———. ———
2 2
3
Q
Equation of a line with gradient (m) and y-intercept (c)
A
y = mx + c
4
Q
What does m represent
A
Gradient
5
Q
What does c represent
A
y intercept
6
Q
Equation of a line with gradient m passing through the point (x1, x2)
A
y - y = gradient (x - x)
7
Q
Gradient of a line parallel to
y = 4x + 2
A
4
8
Q
Gradient of a line perpendicular to y =
3x + 2
A
- 1/3
9
Q
Gradient of a line perpendicular y =
5x + 6
A
- 1/5
10
Q
Gradient of a line parallel to
2y + 3x = 2
A
-3/2
