Linear equations
The variable that represents slope
Slopes are the same
What are parallel lines?
This means there is a relationship between 2 variables
What is correlation?
A straight line that shows the overall trends in a scatter plot
how to find slope (algebraic or graphically)
(y-y)/(x-x) or rise / run
The variable that represents the y intercept.
What is "b"?
Slopes are negative reciprocals and the product equals -1
What are perpendicular lines?
This means that the independent variable will CAUSE the dependent variable to happen
What is causation?
The form a line of best fit is written in.
What is slope intercept or y = mx + b?
the more students talk, the grumpier a teacher is
Correlation
y - y = m(x - x)
What is point slope form?
What is 1/4?
This is a number between -1 and 1 and represented by the variable "r"
What is correlation coefficient?
If a table or graph is using years, you must do the before making any calculations
Convert the years to 0, 1, 2 etc. or subtract the years to find the appropriate value.
what is the perpendicular slope to m = 8.
What is -1/8?
Ax + By = C
What is Standard Form?
a slope perpendicular to y = -2/3x + 5
What is 3/2?
When the correlation coefficient is 0. (Shoe size and favorite ice cream)
y = 0.2119x +12.284
m = 0.2119
Find the slope of a line that passes thru the points (-2, 6) and (4, -3).
m = -3/2 or -1.5
y = mx + b
What is slope intercept form?
Write an equation parallel to the line y = -x +3 thru the point (1, 1)
What is y = -x + 2?
The outcome of an election is predicted with a high degree of accuracy based on the results of flipping a coin.
Correlation
y = 6.5x
where y represents amount in sales and x represents number of pizzas sold
30 pizzas
y = -1/3x -1