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alg 2 voc. Mrs. dews
Ch 2.1- 2.5
| Question | Answer |
|---|---|
| relation | is a set of pairs of input and output values |
| domain | x values |
| range | y values |
| function | a function is a relation in which there is only one y value for each x value |
| vertical line test | a vertical line must pass through a graph once to be a function |
| function notation | f(x) as "f of x" and not "f times x" |
| linear function | a function whose graph is a line |
| linear equation | represent a linear function |
| dependent variable | y in a linear equation because y depends on x |
| independent variable | because x doesn't depend on anything it is independent |
| y-intercept | point at which line crosses y-axis |
| x- intercept | point at which line crosses x- axis |
| standard form | Ax+By=c |
| slope | rate of change, m = (y₂ - y₁) / (x₂ - x₁), \(m=\frac{\Delta y}{\Delta x}\) m=rise over run |
| point slope form | y-y1=m(x-x1) |
| slope intercept form | y=mx+b |
| horizontal line | slope=0 |
| vertical line | slope is undefined |
| perpendicular line | slope is negative reciprocal |
| parallel line | slope is m=m |
| direct variation | in the form y=kx (where k ≠ 0) |
| constant of variation | k= y/x |
| proportion | y1/x1 = y2/x2 |
| absolute value function | f(x)=|mx+b|+c |
| absolute value equation | y=|mx+b|+c |
| vertex | turning point ; point where function reaches a maximum or a minimum |
| vertex form | (-b/m, c ) |
| line of symmetry | x value of the vertex x= -b/m |
Created by:
laneharvey