5. Lines and slopes a. Given two points with coordinates (x 1 , y 1 ) and (x 2 , y 2 ), what is the slope of the line
passing between those two points?
b. Parallel lines have slopes
c. Perpendicular lines have slopes
d. How can you tell if three points are collinear?
e. Know how to write the equation of a line if you have
i. Slope and y-intercept
ii. A single point on the line, and the slope of the line
iii. Two points on the line
f. Every point equidistant from the axes is on the line or