3.1 Flashcards
What is a linear relationship?
A linear relationship can be identified from a graph, table, or formula.
What is the gradient-intercept form of a linear formula?
y = mx + b
What does the gradient (m) represent in a linear formula?
The amount by which y increases when x increases by 1.
What does the y-intercept (b) represent in a linear formula?
The y-coordinate of the point of intersection of the graph with the y-axis.
What type of line has a gradient greater than 0?
Increasing line.
What type of line has a gradient less than 0?
Decreasing line.
What type of line has a gradient equal to 0?
Horizontal line.
What type of line has no gradient?
Vertical line.
Fill in the blank: For a vertical line, there is no _______.
gradient
What is the characteristic of a horizontal line in terms of gradient?
The gradient is equal to 0.
In a linear relationship, how can a constant increase or decrease be identified?
From a table of values.
True or False: A vertical line has a y-intercept.
False
