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We are limited, but we can push back the border of our limitations.
Do Now
Take a square of graph paper from the shelf
Take out your student text book
Put your homework on your table for a stamp
1. The table of values shown describes a function.
a. Represent the table of values using an equation.
b. Write the equation using function notation.
c. Create a graph on the coordinate plane.
Homework Questions?
S
Water Under the Bridge
3.4 Modeling with Functions
Today’s Objectives
Use multiple representations of functions to model and solve problems .
Use multiple representations of functions to analyze problems .
The Water’s 5ft High and Rising
A nearby town hired a civil engineer to rebuild their storm drainage system . The drains in this town are open at the top to allow water to flow directly into them . While designing the drains, the engineer must keep in mind the height and the width of the drain . She needs to consider the height because the water cannot rise above the drain or it will flood the town and cause major destruction . However the drain must also be wide enough that it will not get clogged by debris .
The civil engineer will use rectangular sheets of metal to build the drains . These sheets are bent up on both sides to represent the height of the drain . An end view of the drain is shown .
Answer #1 with a partner
The Water’s 5ft High and Rising
Work on #2-5 with your partner
Paragraph at top of pg 160
#6-7 as a class
#8-11 with a partner
#12 with a partner
Determine the Best Design
A civil engineering company is hired to design a new drainage system for your town. To construct one of the storm drains, a sheet of metal that is 15.25 feet wide is folded on both sides.
Describe the drain that has the maximum cross-sectional area. Include at least two different representations in your description. Show all work and explain your reasoning.
Today’s Objectives
Use multiple representations of functions to model and solve problems .
Use multiple representations of functions to analyze problems .
3.4 Exit Slip
A rain gutter is to be constructed with a cross section that is a rectangle. The gutter is to be constructed out of a sheet of metal 15 inches wide.
1. Draw a diagram of this situation. Let x represent the height of the rain gutter.
2. Suppose the height of the rectangle is 4 inches. Determine the width of the rain gutter. Determine the area of the cross-section.
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