Univ. of Wisconsin
J.D. Univ. of Wisconsin Law school
Brian was a geometry teacher through the Teach for America program and started the geometry program at his school
When you have solved for an equation almost all of the way but you're left with a negative sign in front of your variable, you can think of that as a negative one coefficient. Like, -x is the same thing as -1 times x. To "undo" that multiplying by negative one, you'd want to multiply everything by -1 so that you have just regular x all by itself. (Note- if you think of dividing by negative one, you'll get the same result- just do what makes more sense in your head.)
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