Questions on 1.2 HW?. Warm-Up  Write a rule for the function X0123 Y3579 X16141210 Y7654.

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Presentation transcript:

Questions on 1.2 HW?

Warm-Up  Write a rule for the function X0123 Y3579 X Y7654

1.3 Represent 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 + 7 Domain: 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 represented by the graph.

1.4 Graph Using Intercept 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)