# Algebra 1 Chapter 5

## Terms

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- What is the same thing as constant of variation?
- slope(m=k)
- the product of the slopes or two lines is -1
- the line is perpandicular
- no correlation
- points are random on a scatter plot
- slope
- the steepness of a line upon a coordinate plane
- to find the x intercept
- substitute 0 for y
- m=
- slope
- line of fit
- passes close to most data points on a scatter plot
- positive correlation
- points seem to be going up on a scatter plot
- y intercept
- where the line passes through the y axis
- standard form
- ax+by=c
- b=
- y-intercept
- In direct variation we say...
- "y varies directly with/as x"
- x intercept
- where the line passes through the x axis
- vertical line=
- undefined slope
- to find the y intercept
- substitute 0 for x
- Rules of standard form
- A,B,and C are integers, A is more than 0, and A and B are not both 0
- rise
- top number in fraction, also vertical change in y
- Formula to find slope
- y2-y1/x2-x1
- run
- bottom number in slope fraction, also horizontal change in x
- Direct variation equation
- y=kx
- to find perpindicular lines...
- make the slope its opposite reciprocal
- y-y1=m(x-x1)
- point slope form
- parallel lines
- lines in the same plane that never intersect
- all direct variation graphs pass through...
- the origin (0,0)
- Perpindicular lines
- lines that intersect at right angles
- slope-intercept form
- y=mx+b
- k=
- constant of variation
- k can not equal
- Zero (0)
- slope is...
- rise over run
- negative correlation
- points seem to be going down on a scatter plot