3Thavo §7.6 Tables and formulas

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§7.6 Tables and formulas 

is today's meal.

 

First we have one more bite at §7.5 Square root formulas!

For the next questions:

+  calculate the Boundary point on scrap paper, and

+  choose the right answer on the Multiple Choice slide!

Find the Boundary point for:

The boundary is .....

y=√​(10−2x)​​​−13

1. (-13, 5)
2. (10, -13)
3. (5, -13)
4. (-5, -13)

Solution:

One more about this:

Find the Boundary point:

1. (-5, -7)
2. (7, -5)
3. (5, -7)
4. (-7, -5)

Solution:

Now...

we start with §7.6, in which you will see back all

relations between x and y that were dealt with earlier in this chapter!

But...,which type of Relations/Formulas between x and y do you remember?

Answers:

Types of Relations/Formulas you learned in Chapter 7:

+ linear 

+ fractional 

+ square root                  + directly proportional

+ power                              + inversely proportional

+ 

Are you completely

Baffled by all this?

Well, there are quite some different

types... 

All of these types...

are covered by the paragraphs, that we went through.

When doing the Summary -not now- you will practice all of them once more. And you'll probably feel more like the next slide.

What is §7.6 about?

For a Table with x and y numbers you going to:

+ find out which Relation there is and

+ make the formula for the variables x and y

+ for all this: see next slides!

Which type of exercise is not in this
Theory section?

The answer is:

A Directly Proportional Relation is not there?!

(Was that too much trouble?)

Homework time.

Good luck in doing §7.6 !

What did you learn this lesson?