The document discusses how the cost of a pizza varies directly as the square of its radius. It is given that a 6 inch pizza costs $8, and asks how much an 11 inch pizza would cost using this relationship.

1. THE COST OF A PIZZA VARIES DIRECTLY AS
THE SQUARE OF ITS RADIUS. IF A PIZZA
WITH A 6 INCH RADIUS COSTS $8.00, HOW
MUCH SHOULD A PIZZA WITH AN 11 INCH
RADIUS COST?

2. SLOPE-INTERCEPT FORM
• THE SLOPE-INTERCEPT FORM OF A LINE IS THE MOST COMMON FORM OF A LINE
• DESCRIBES A LINE AND ALL OF THE POINTS CONTAINING THAT LINE
• ALLOWS YOU TO QUICKLY IDENTIFY THE SLOPE AND THE Y-INTERCEPT
• SLOPE-INTERCEPT FORM: 𝑦 = 𝑚𝑥 + 𝑏

3. WHICH OF THE FOLLOWING ARE WRITTEN
IN SLOPE-INTERCEPT FORM?
• 𝑦 =
2
3
𝑥 + 6
•3𝑥 + 7𝑦 = 4
• 𝑦 = 3𝑥 − 8
•3𝑦 = −7𝑥 + 12

4. WRITE AN EQUATION IN SLOPE-INTERCEPT
FORM GIVEN TWO POINTS.
•FIND THE EQUATION OF THE LINE THAT PASSES THROUGH (-1,4) AND (1, -2)

5. ON YOUR OWN
•FIND THE EQUATION OF THE LINE THAT PASSES THROUGH (5, -3) AND (-4, 3).

6. WRITE THE EQUATION IN SLOPE-INTERCEPT
FORM.
•9𝑦 − 6𝑦 = −9𝑥 + (−6)

7. ON YOUR OWN
•WRITE THE EQUATION IN SLOPE-INTERCEPT FORM: 7𝑥 − −6 𝑥 = −2𝑦 + 4

8. GRAPH THE LINE
• 𝑦 = 5𝑥 − 1
USE THE FOLLOWING STEPS:
1. EQUATION IS IN SLOPE-INTERCEPT FORM
2.IDENTIFY Y-INTERCEPT
3.IDENTIFY SLOPE
4.PLOT NEXT TWO POINTS

9. ON YOUR OWN
• 𝑦 = −
3
2
𝑥 + 3