Questions on 1.2 HW?

Warm-Up Write a rule for the function

X 0 1 2 3

Y 3 5 7 9

X 16 14 12 10

Y 7 6 5 4

1.3Represent Functions as Graphs

Example 1:

Graph the function y = 3x with domain 0, 1, 2 , 3, and 4 Step 1: make a table Step 2: plot a point for each ordered pair.

X

Y

Your Turn: Graph the function

y = -2x + 7Domain: 1, 2, 3, 4, and 5

Example 2: Write a rule for the

function represented by the graph. Identify the domain and range of the function.

Your Turn: Write a rule for

the function represented by the graph. Identify the domain and range of the function.

1.3 Homework:

P. 13 #1-14 P. 15 #7-14

Questions on 1.3 HW??? (p.13 and p.15)

Warm-up Write a rule for the function representedby the graph.

1.4 Graph Using Intercept

1.1-1.4 Quiz: Wednesday

Vocabulary X-intercept: the x-coordinate of a

point where a graph crosses the x-axis To find the x-intercept plug a zero in for

y. Y-intercept: the y-coordinate of a

point where a graph crosses the y-axis To find the y-intercept plug a zero in for

x.

Example 1:

Find the x- and y-intercepts of the graph 7x – 3y = 21

Your Turn:

Find the x- and y-intercepts for the graph of -4x + 3y = 24

y = 1/5x – 3

Example 2:

Identify the intercepts of the graph.

Your Turn:

Identify the intercepts of the graph.

Example 3:

Graph 3x + 2y = 6. Label the points where the line crosses the axes.

Your Turn:

Graph x – 1/2y = 1. Label the points where the line crosses the axes.

(1,0)

(-2,0)

1.4 Homework

P. 19 (all problems)