March 9, 2015

A YouTube video from LearnZillion

Supports the following Standards of Mathematical Practice

• 2 Reason abstractly and quantitatively.

• 3 Construct viable arguments and critique the reasoning of others.

• 5 Use appropriate tools strategically.

• 6 Attend to precision.

• 7 Look for and make use of structure.

• 8 Look for and express regularity in repeated reasoning.

- Mathematics > General
- Mathematics > Algebra
- Mathematics > Equations
- Mathematics > Geometry
- Mathematics > Graphing

- Grade 6
- Grade 7
- Grade 8
- Grade 9
- Grade 10

Reason abstractly and quantitatively.

Construct viable arguments and critique the reasoning of others.

Use appropriate tools strategically.

Attend to precision.

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.