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algebra ch 4
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Terms in this set (14)
point-slope form
y-y₁=m(x-x₁)
converse
If q, then p (if conclusion, then hypothesis)
perpendicular
Two lines that intersect to form right angles
scatter plot
A graph with points plotted to show a possible relationship between two sets of data.
positive correlation
if y tends to increase as x increases
negative correlation
as one variable increases, the other decreases
relatively no correlation
If x and y have no apparent relationship
line of fit
a line that describes the trend of the data in a scatter plot
causation
A cause and effect relationship in which one variable controls the changes in another variable.
best-fitting line
the line that lies as close as possible to all the data points in a scatter plot
linear regression
an algorithm to find a precise line of fit for a set of data
interpolation
estimating a value within the range of measured data
extrapolation
the act of estimation by projecting known information
zero of a function
For the function f, any number x such that f(x) = 0
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