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CPM Unit 4 Key Quest
CPM Unit 4 Key Question Linear Functions and Inequalities
Question | Answer |
---|---|
m=rise/run=Change in y/ Change in x | Slope |
y=mx+b | Slope Intercept Form of a Line |
y-y1=m(x-x1) | Point Slope Form of a Line |
Ax+By = C where a>0 | Standard Form of a Line |
Where a graph hits the y axis or where x=0 | y intercept |
Where a graph hits the x axis or where y=0 | x intercept |
Slope of a line going up from left to right | Positive Slope |
Slope of a line going down from left to right | Negative Slope |
Slope of a vertical line | Undefined Slope |
Slope of a horizontal line | Zero Slope |
Method of solving systems when both equations are solved for y | graphing or substitution |
Method of solving systems when one equation is solved for x or y | substitution |
Method of solving systems when both equations are in standard form | ellimation |
When does a system have no solutions? | When both lines have the same slope and different y-int. Parallel lines. |
When does a system have infinite solutions? | When both lines have the same slope and the same y-int. Both are the same line. |
In a situation, when would you use slope intercept form? | When you know a rate of change and a starting point when x=0 |
In a situation, when would you use point-slope form? | When you know a rate of change and a point where x is not equal to zero |
In a situation, when would you use standard form? | When you know two rates of change and a total |