Linear Relationships & Slope
A characteristic of a linear relationship?
A straight line on a graph
The formula for direct variation
y=mx
The equation for slope intercept
y=mx+b
The y-intercept
The point that the graph crosses the y-axis
Another characteristic of linear relationships
A constant rate of change
The point that direct variation always begins at
(0,0)
x
The x-intercept
The point where the graph crosses the x-axis
The formula to find slope between two points
y2-y1/x2-x1
The type of relationship that direct variation is
Linear relationship
The variable for the y-intercept
b
x y
0 0
1 1
2 2
What is proportional
The formula to find slope on a graph
rise/run
The way direct variation is found
Slope x Independent Variable
The slope of the equation: y=2x+1
2
What is nonproportional.
The names for slope
Rate of change
Slope
Constant of proportionality
The variable for slope.
m
The method used to graph slope intercept form.
Plot the y-axis, then use rise over run.
The relationship of of ordered pairs where every ratio of y to x is equivalent.
What is proportional.