Chapter 2 review
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Absolute value function | f(x)=|mx+b|+c is a absolute value equation in two variables...
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| dependent variable | a variable (often denoted by y ) whose value depends on that of another.
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| direct variation | The equation y/x = 6 states that y "varies directly as" x since the ratio of y to x (also written y:x) never changes. The number 6 in the equation y/x = 6 is called the constant of variation.
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| Domain | The domain is the set of all possible x-values which will make the function "work", and will output real y-values.
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| Function | Often, the equation relates the value of a function (or functions) at some point with its values at other points.
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| Function notation | The f (x) notation can be thought of as another way of representing the y-value in a function, especially when graphing. The y-axis is even labeled as the f (x) axis, when graphing.
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| Independent variable | a variable (often denoted by x ) whose variation does not depend on that of another.
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| linear equation | an equation between two variables that gives a straight line when plotted on a graph.
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| linear function | a polynomial function of degree zero or one, or is the zero polynomial. In linear algebra and functional analysis, a linear function is a linear map.
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| linear inequality | linear inequality contains one of the symbols of inequality: < is less than. > is greater than. ≤ is less than or equal to
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| mapping diagram | A function is a special type of relation in which each element of the domain is paired with exactly one element in the range. A mapping shows how the elements are paired. Its like a flow chart for a function, showing the input and output values
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| parent diagram | is the simplest function of a family of functions.
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| point slope form | The equation of a straight line in the form y − y1 = m(x − x1) where m is the slope of the line and (x1, y1) are the coordinates of a given point on the line
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| range | The difference between the lowest and highest values. In {4, 6, 9, 3, 7} the lowest value is 3, and the highest is 9, so the range is 9 − 3 = 6.
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| Reflection | A transformation in which a geometric figure is reflected across a line, creating a mirror image.
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| relation | between two sets is a collection of ordered pairs containing one object from each set
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| scatter plot | A graph of plotted points that show the relationship between two sets of data. In this example, each dot represents one person's weight versus their height.
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| Shrink | multiplies all y values by the same factor greater than 1.
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| Slope | is often denoted by the letter m. The direction of a line is either increasing, decreasing, horizontal or vertical.
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| slope intercept form | the equation of a straight line in the form y = mx + b where m is the slope of the line and b is its y-intercept
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| standard form | is a way of writing down very large or very small numbers easily.
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| stretch | multiples all y values .
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| transformation | Change
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| translation | shifts shifts a graph horizontally vertically or both
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| trend line | a line that approximates the relationship between data
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| vertex | each angular point of a polygon, polyhedron, or other figure.
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| vertex line test | s a visual way to determine if a curve is a graph of a function or not
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| x intercept | is a point on the graph where y is zero
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| y intercept | f this line is the value of y at the point where the line crosses the y axis.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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