Straight Line Graphs Flashcards
1
Q
How to find the gradient
A
x₂-x₁
2
Q
What is the relationship of the gradients between parallel lines?
A
Parallel lines have the same gradient
3
Q
What is the relationship of the gradients between perpendicular lines?
A
The product of their gradients will equal -1
4
Q
How to find the length of a line with two points?
A
√(x₂-x₁)² + (y₂-y₁)²
5
Q
Equation for the midpoint
A
(x₁+x₂ y₁+y₂)
——- ——-
2 , 2
6
Q
Equation to find the equation of a line given its gradient and a point that it passes through
A
y-y₁=m(x-x₁)
