1TH/vwo §6.3 Linear formulas

• Wiskunde
• Middelbare school
• havo, vwo
• Leerjaar 1

§6.3 Linear formulas

In this Lessonup 

+    linear graphs and 

+    linear formulas are dealt with

Formula:      number of visits x 3 + 6 = amount

Statement 1:

The graph for this formula is a straight line.

St. 1: This graph is a straight line.

1. true
2. false

8

It is a straight line indeed,

as you see alongside.

Time for a joke.

number of visits x 3 + 6 = amount

Statement 2:

The roles that is played by the numbers 3 and 6 are the same.

St. 2: The roles are the same.
(Explanation next slide.)

1. true
2. false

It will be clear by now that 

the numbers 6 and 3 

play a completely different role!

Question:

What is the STARTING VALUE in this Formula?

ANS

The STARTING VALUE IS ...

1. 20
2. 10

Important:

+   when a graph is a STRAIGHT LINE it is called a LINEAR GRAPH

+   the formula of a linear graph is called a LINEAR FORMULA

Homework time

Do §6.3 now,

you may skip 16 and 18

1. make  2. correct   3.picture     4. send in in GC

By the way, this  §  isn't that much work. Only one graph to be drawn.

Lucky you!