Category Archives: Pre-Algebra

Pre-Algebra: Chapter 8 Review Again, review the Form 1a version of the test tonight. Make sure you know what to do! Don’t forget: functions, vertical line test, domain and range, rise, run, slope, x and y-intercepts and inequalities! Here is … Continue reading →

Pre-Algebra: Chapter 8 Review Prepare for the Chapter 8 Test! Make sure that your notes and homework are all up to where they should be. Algebra: Chapter 8-8 Solving Equations by Factoring The principle of zero products states that: for … Continue reading →

Pre-Algebra: Chapter 8 Review Review all the concepts that we tackled in this Chapter: Relations and Functions – use the vertical line test (lesson 1) Scatter plots – trends are positive, negative or none (lesson 2) Graphing linear equations – … Continue reading →

Pre-Algebra: Chapter 8-9 Graphing Inequalities Given an inequality, treat it as an equality and using the x and y intercepts, find the solution to the equality. Plot it on your graph paper. If the inequality is just , then the … Continue reading →

Pre-Algebra: Chapter 8-8 Systems of Equations Take 2 linear equations and graph them (with at least 2 points for each linear equation) and where they intersect is a “SOLUTION” to BOTH equations. Pretty simple to do, but it can be … Continue reading →

Pre-Algebra: Chapter 8-7 X and Y intercepts The x-intercept we find by setting the y value to 0. We are finding where the linear equation crosses the x axis. The y-intercept is found by setting the x value to 0 … Continue reading →

Pre-Algebra: Chapter 8-6 Slope – Day 2 Slope is defined as the (change in the y direction) ÷ (change in the x direction) or the rise ÷ run. If you know the change in the y and x directions by … Continue reading →

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 →