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# CCSS.Math.Content.8.EE.B.6 - Use similar triangles to explain why the slope m is the same between any two distinct points on a non-vertical line in the coordinate plane; derive the equation y = mx for a line through the origin and the equation y = mx + b for a line intercepting the vertical axis at b.

Authors: National Governors Association Center for Best Practices, Council of Chief State School Officers

Title: CCSS.Math.Content.8.EE.B.6 Use Similar Triangles To Explain Why The Slope... Expressions and Equations - 8th Grade Mathematics Common Core State Standards

Publisher: National Governors Association Center for Best Practices, Council of Chief State School Officers, Washington D.C.

(Page last edited 10/08/2017)

1. Finding the X Intercept and Y Intercept to Graph Standard Form Equations - Five practice problems to practice using what was learned in the lesson above, followed by an answer key
2. Fun and Sun Rent-a-Car - Students use tables, graphs, linear functions to solve a real-world problem
3. Graphing linear equations - Practice from Math.com
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5. Rate of Change Practice Problems - Nine practice problems (including a graph to interpret) followed by an answer key
6. Rate of Change: Connecting Slope to Real Life - A lesson on using slope to find the rate of change accompanied by graphs and explanations
7. Representations of Linear Functions: Cab fares - The charge for a cab ride is determined by the length of travel. Some companies also charge a basic, fixed amount. At this site you will find descriptions of fares of three competing cab companies and you are asked to suggest a new fare.
8. Slope Intercept Jeopardy - This show is in Jeopardy format; with five categories each with five questions - good for a while class review
9. Straight Lines and Slopes - y-Intercept - Designed as a bellwork assignment, this show gives practice at reading slope and intercept from graphs [15 slides]. Explanation from Regents Prep assessment preparation site [from the Internet archive, the Wayback Machine.]
10. Using the X and Y Intercept to Graph Linear Equations - This follow up to the lesson on slope and rate of change deals with linear equations written in standard form rather than slope intercept form
11. Word Problems with Katie - Two levels are available: addition and subtraction in level 1, and multiplication and division in level 2 - questions start out easy and get a little harder as you go Internet4classrooms is a collaborative effort by Susan Brooks and Bill Byles. 