1. Warmup
Find the slope of the line passing through the points. Then tell whether the line rises, falls, is horizontal, or is vertical.
1. (–3, 5),(5, –2)
2. (7, 8), (–8, 8)
Tell whether the lines are parallel, perpendicular, or neither.
3. Line 1: through (5, –1) and (6, –2)
Line 2: through (–2, 3) and (4, 8)

3. Graphing lines and Intercepts Ch. 2.3

4. Key Concept: Parent Function: the ________ function in a family.
** Parent function for all ________ functions is ________.
Graph:

5. Graph Linear Functions

6. Key Concept: Slope-Intercept Form - _________________.
Step 1 Write the equation in slope intercept form by solving for y
Step 2 Identify the y-intercept b and use it to plot the point (0,b)
where the line crosses the y- axis
Step 3 Identify the slope m and use it to plot the second point
Step 4 Draw a line through the two points

7. Graph an equation in slope-intercept form
y = x – 3

8. Key Concept: Standard Form - ____________________.
Step 1 Write the equation in standard form
Step 2 Identify the x-intercept by letting y=0 and solve for x
Step 3 Identify the y-intercept by letting x=0 and solve for y
Step 4 Draw a line through the two points

9. Graph an Equation in Standard Form
5 x +2(0) = 10
5(0) + 2y =10

10. Horizontal and Vertical Lines
Horizontal lines – The graph of y=c is horizontal through (0,c). Vertical lines – The graph of x = c is a vertical line through (c,0).

11. Homework
Textbook - Pg (odd),9,11,15,24,28,31,33,34,36