3.  Rate of Change- Measures how much a quantity changes, on average, relative to the change in another quantity, over time.  Slope- The ratio of the change in y- coordinates to the corresponding change in x-coordinates.  Family of Graphs- A group of graphs that displays one or more similar characteristics.  Parent Graph- The simplest of the graphs in a family.  Oblique- A line that is neither horizontal nor vertical.

9.  M is the slope of the line  B is the y-intercept

10.  Find the intercepts › Ax=C is the x-intercept, since y=0 for the x- intercept › By=C is the y-intercept, since x=0 for the y- intercept  Plot the two intercepts on the graph  Connect the points with a line

11. 5x + 3y = 15

18.  If the two lines have the same slope, then they are parallel.  If two lines are parallel, then they have the same slope.

19. Graph a line through the point (1,3) that is parallel to y=2x-5

23.  If two lines have slopes that are opposite reciprocals, then they are perpendicular.  If two lines are perpendicular then the slopes are opposite reciprocals.

24. Graph a line through (2,3) that is perpendicular to y=3x-6

28.  Worksheet 2-3