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# Koehne Linear Funct

### Precal Review of Linear Functions

Slope measures... Rate of change of y with respect to x
Slope-Intercept form of a line is... y=mx+b
In the slope-intercept form of an equation, the slope is represented by the letter _____ m
If the y-intercept of a line is -4, the point represented by this is... (0,-4)
Slopes of parallel lines are... The same
Slopes of perpendicular lines are... Opposite reciprocals
Linear functions are unique because... Their slopes are constant
The slope of a horizontal line is... 0
The slope of a vertical line is... undefined because we cannot divide by 0
The equation of a horizontal line is in the form... y=c
The equation of a vertical line is in the form... x=c
The slope of a line which contains the points (2,5) and (-3,-10) is... 3
The point-slope form of a linear equations is... y-y1=m(x-x1)
The equation of a line with slope = 3 through the point (-3, -10) is... y+10=3(x+3)
The slope of the line with equation 3x+5y-9=0 is... -3/5
To find the equation of a line given a graph of the line, we would... Locate the y-intercept. Determine the slope by finding the distance up/down and right/left from the y-intercept to another point on the line. The put the slope and y-intercept into the equation y=mx+b.
Created by: Mrs Koehne

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