Chapter 3

Question 1

slope of a line

Answer 1

y2-y1/x2-x1

Question 2

finding the equation of a line with a point and a slope given

Answer 2

use the equation: y-y1 = m(x-x1) (point-slope form)

Question 3

finding the equation of a line with two points given

Answer 3

first find the slope of the line and then use point-slope equation

Question 4

finding the equation of a line with a slope and the y-intercept given

Answer 4

use y = mx + b