| A | B |
|---|
| y intercept | the value of y when x is 0 |
| initial condition | the starting point in the situation |
| slope intercept form | y= mx + b for a line |
| linear function | a function with an equation of the form y= mx + b |
| constant increase situation | a situation in which a quanity y increases by a constant amount for every fixed increase in x |
| constant decrease situation | a situation in which a quanity y decreases by a constant amount for every fized increase in x |
| slope | rate of change between 2 points |
| piecewise linear graph | a union of segments or pieces of two or more linear functions |
| linear combination situation | all variables are to the first power and are not multiplied or divided by eachother |
| standard form | when A and B are not both zero, the equation Ax + By = C |
| x intercept | the value of x at the point wehre a graph corsses the x axis |
| vertical line | a line with an equation of the form x=h |
| oblique line | a line that is neither horizontal or vertical |
| horizontal line | a line with an equation of the form y=b |
| point slope form | an equation of the form y-y1 + m(x-x1) where (x1,y1) is a point on the line with a slope m |
| scatterplot | the discrete points that lie on a graph |
| regression line | the line that best fits through the points on a scatter plot |
| correlation coefficent | (r) or the number from -1 to 1 |
| constant difference | in an arithmetic sequence the difference of two consecutive terms |
| arithmetic sequence | a sequence with a constant difference between sucessive terms |
| recursive formula for an arithmetic sequence | a set of statements that indicates teh first term of a sequence and gives a rule for how the nth term is related to one or more of the previous terms |
| explicit formula for an arithmetic sequence | a formula which describes any term in a sequence in terms of its position in the sequence |
| step function | when the function is not a linear function, but the graph is piecewise linear. the graph looks like a series of steps |
| greatest integer function | the function f with f(x) = (x) for all real numbers x |
| rounding down function | grestest integar function |
| floor function | greatest integar function |
