1TTO §6.3 Linear formulas PTI Apr24

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

§6.3 Linear formulas

In this Lessonup 

+    linear graphs and 

+    linear formulas are dealt with

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.

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

Above 

Above you clearly see that 6 and 3 play a completely different

role in the graph!

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

Statement 3:

The graph that corresponds to this formula is a straight line.

St. 3: The graph for:
time x time + 1 = height
is a straight line.
(Explanation follows.)

1. false
2. true

Above you see that the graph is certainly no straight line.

By the way, this formula and graph are very similar to exercise 14  from paragraph 6.2!

 time x time + 1 = height 

If you got this wrong, study §6.2 once more!

Homework time

Do §6.3 now,

1. make  2. correct