SoW 5 Flashcards
How do you find midpoint of a line segment?
Find avg of x and y co-ordinates
Find the midpoint of (8,0) and (4,6)
(8+4)/2 = 6
(0+6)/2 = 3
Therefore midpoint = (6,3)
What happens when using line segments and it ends in 0?
The answer is undefined
What is a gradient?
The gradient is the steepness of the line
Complete the table y = 3x+2
X from -1 to 3
X| -1 | 0 | 1 | 2 | 3 |
Y| -1 | 2 | 5 | 8 | 11|
Which way do + and - gradients go
Positive gradients go left to right sand negative the other way
Where is the gradient in the equation y=mx+c
M is the gradient
What makes parallel lines parallel
The gradient
How do you find “m” and “c” on a graph
C is where the line crosses the y axis
M is the rise over the run of the line
What are the steps for finding a line equation with two points
- find the gradient
- substitute gradient into equation
- Substitute one of the points in and solve for C
How do you plot inequalities?
Draw the lines
Find the region
Equation linking speed, distance and time
Speed = distance / time
What shape is y = x cubed
/
-
/
/
What shape is Y=x squared
U
What shape is y = 1/x
Never meet the origin make L shape
