scatterplots
What is another word for trend line?
Line of best fit
What is the slope formula?
(y2-y1)/(x2-x1)
What is the exponential standard form equation?
y = a b^x
What is the symbol for change? hint: think of slope as the change in y over the change in x
a triangle!
When estimating where a trend line should be placed in a data set, how do you know where to place it?
Try to get the points on or as close the the line as possible (roughly same # of points above and below the line)
What is an intercept?
an intersection point of a line and an axis
What does 4 stand for in the equation y = 4(0.25)^x
4 is the initial value
What is the "break even point"
When two situations are equal
What is a point called that is not near the line of best fit?
Outlier
What is the slope intercept form equation?
y=mx+b
Does the equation y = 3(0.98)^x have a growth or decay factor?
decay
Write an equation of a line passing through the point (0,8) with a slope of 2/3
y=(2/3)x + 8
If the points of a scatterplot follow closely to the line y= 3x + 2, what kind of correlation does it have?
Strong Positive
What is the slope & y-intercept of the equation y=10x+2
slope = 10
y-int = 2
What forms on a graph when an exponential function is graphed?
a curve
Find the distance between the points (-2,3) and (1,5)
sqrt13 or 3.6