Monthly Archives: February 2007

Pre-Algebra: Chapter 8-6 Slope! Rise divided by the run is the definition of slope. Rise is the movement up or down (vertically) on a graph, positive up and negative down. Run is like running on a track, the travel left … Continue reading →

Pre-Algebra: Chapter 8-5 Problem Solving Strategy – Draw a Graph We can use the technique of drawing a linear graph from known information to extrapolate (extend) or interpolate (look at values inside) information. We usually need at least 2 data … Continue reading →

Pre-Algebra: Chapter 8-4 Equations as Functions Functions are described as f(x) = 3x + 4. Instead of y = 3x + 4, functions have x on both sides of the equation, but the f(x) is nothing more than y. Also, … Continue reading →

Per-Algebra: Chapter 8, Lesson 3 Graphing Linear Equations To find solutions for linear equations, we can choose ANY values you want for either x or y and then solve for the other term. We are trying to find the ordered … Continue reading →

Pre-Algebra: Chapter 8-2 Scatter Plots Scatter plots are data plotted on the x-y axes that are just a bunch of dots. Sometimes, the dots are all over the place, (called no relationship or no correlation), in a positive relationship (the … Continue reading →

Pre-Algebra: Chapter 7 Test and Chapter 8-1 Relations and Functions A RELATION is a set of ordered pairs like (-3,1), (0,2) and (4, -2). The DOMAIN is the x terms (-3, 0, 4) and the RANGE is the y terms … Continue reading →