Chapter 5: Straight Line Graphs Flashcards
1
Q
What is the gradient (m) of a line?
A
The steepness of the line
2
Q
What is the formula of the gradient?
A
(y₂ - y₁) = m(x₂ - x₁)
3
Q
What is the slope-intercept form of a straight line equation?
A
y = mx + c
4
Q
What is the standard form of a straight line equation?
A
ax + by + c = 0
5
Q
What gradient does a perpendicular line, which has gradient m, have?
A
-(1/m)
6
Q
What is the product of the gradient of 2 perpendicular lines?
A
-1
7
Q
How do you find the distance between (x₁, y₁) and (x₂, y₂)?
A
√((x₂ - x₁)² + (y₂ - y₁)²)
