Intro Question--how many degrees are there in a 100-gon? How do we know? And how many degrees are in EACH of the angles of a 100-gon?
Go over homework and look at what makes lines lines. Why does perpendicular perpendicular? And what does parallel really mean?
Types of ways to write a linear equation
y=mx+b
y-y_1=m(x-x_1)
Ax+By=C
solve this form for y=mx+b
What is a system of equations
creating two car equations and using graphing to solve these.
you will be solving these in your homework.
what values can go into a line?
special cases
System of Equations
elimination is as far as we got.