Chapter+four.


 * **Term** || **Lesson** || **Definition** ||
 * **Best-Fit Line** ||  ||   ||
 * **Bi-variate Data** ||  ||   ||
 * **Correlation Coefficient** ||  ||   ||
 * **Line of Fit** ||  ||   ||
 * **Linear Extrapolation** ||  ||   ||
 * **Linear Interpolation** ||  ||   ||
 * **Linear Regression** ||  ||   ||
 * **Median-Fit Line** ||  ||   ||
 * **Parallel Lines** ||  ||   ||
 * **Perpendicular Lines** ||  ||   ||
 * **Scatter Plot** ||  ||   ||
 * **Slope-Intercept Form** ||  ||   ||

**A, D, or NS** ||  **Statement**  ||  **Step 2** **A or D** ||
 * **Step 1**
 * A ||  1. The slope of a line given by an equation in the form y=mx+b can be determined by looking at the equation.  ||   ||
 * NS ||  2. The y-intercept of y=12x-8 is 8.  ||   ||
 * A ||  3. If two points on a line are known, then an equation can be written for that line.  ||   ||
 * NS ||  4. An equation in the form y = mx + b is in point-slope form.  ||   ||
 * A ||  5. If a pair of lines are parallel, then they have the same slope.  ||   ||
 * A ||  6. Lines that intersect at right angles are called perpendicular lines.  ||   ||
 * NS ||  7. A scatter plot is said to have a negative correlation when the points are random and show no relation between x and y.  ||   ||
 * NS ||  8. The closer the correlation coefficient is to zero, the more closely a best-fit line models a set of data.  ||   ||
 * A ||  9. The equations of a regression line and a median-fit line are very similar.  ||   ||
 * A ||  10. Step functions and absolute value functions are types of piecewise-linear functions.  ||   ||