H9 formules en vergelijkingen.

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 1

Welcome K1E

Today:

- Refresh of linear formulas and graphs.

- Instruction of 9.1 shortening formulas .

Working with 9.1

Check of this goals

Goals of this lesson

At the end of this lesson:

- You can shorten formulas.

What do you still remember of linear formulas adn graphs?

Linear formulas

We shorten words to one letter

Examples

number = visits x 5 + 3

n =5v + 3

costs = number of days x 3 - 20

c = 3d - 20

Write the next formulas shorter:
height = number of days x 4 + 10

Write the next formula shorter
costs = 200 - number of weeks x 10

Homework

Work on exercises 9.1

Check of the goals

A. weight x 1.50 +16 = amount
B. 20 - number of minutes x 4 = height

Schrijf de volgende formules korter:
k = 3a + 5a -5
t= 3t - 9t + 4

(Laatste vraag) schrijf zo kort mogelijk:
u = 5k - 10 - 4k - 12 -k