On the 15th week we learned more about slopes.

Colinear: points lining up

Parallel lines: lines that never cross and have the same slope. Ex) m1= m2

Perpendicular lines: two lines that meet at 90 degrees. Ex) m1= 3/4, m2= -4/3

We also started to learn about how to incorporate the last unit domain and range to this unit.

Ex) In a linear equation the amount that y1 to y2 increases or decreases by would be the slope(6) multiplied x. When you multiply the slope(6) to the input(1) you should get the output(2). If it isn’t equivalent then the number that would be added or taken away to get the output, which in this case -4 would be the y-intercept.