Chapter 10 - Straight Lines And Quadratic Equations Flashcards
1
Q
What is m in y = mx + c
A
Gradient of the line
2
Q
What is c in y = mx + c
A
Y intercept
3
Q
How do you find the x-intercept using y = mx + c
A
Substitute y = 0 and then solve for x
4
Q
How do you find the y-intercept using y = mx + c
A
Substituting x=0 and solving for y
5
Q
How do you tell is two line are parallel by their gradients
A
If they have the same gradient they are parallel
6
Q
What will the gradients of 2 perpendicular lines multiplied by each other give you
A
-1
7
Q
Gradient
A
Rise/run
8
Q
How do you find the length of a line when given 2 coordinates
A
By using Pythagoras
9
Q
How do you write coordinate
A
(x,y)
10
Q
How do you find the midpoint of a line with only 2 coordinates
A
- add both x coordinates and divide by 2
- add both y coordinates and divide by 2
- put the 2 new numbers in a coordinate form
11
Q
How do you simplify a quadratic expression
A
FOIL
F - first
O - outside
I - inside
L - last
And then simplify
12
Q
Binomials ?
A
13
Q
A
