## All Tasks

#### Slope

In the picture, you see the graph of a linear function. Can you determine its slope?

# Linear functions

Training

8

#### Zero of a linear function

The linear function $y=2x-4$ is given. Which is the zero point of the function, i.e. the point $A$ where the function meets the x-axis.

# Linear equations

# Linear functions

Training

8

#### Ordinate of a linear function

The linear function is:
$y =-\frac{2}{3} x + b$
For which ordinate $b$ does the point $A(6,-1)$ belong to the linear function?

# Linear functions

# Linear equations

Training

8

#### Hot-air balloon

At the beginning of a journey, a hot air balloon increase with 2 m per second.
Calculate, how many meter the balloon goes up in the first minute.

# Unassigned

Modeling

7

#### Gradient of a street

The picture shows a traffic sign. This give the gradient of a street in percentage. Give the term of a proportional function with the same decreasing. Write the gradient as a decimal number.

# Unassigned

Modeling

8

#### Chocolate bar

To compare prices of products, supermarkets must give the price of 100g or 1 kg of a product.
The chocolate bar in the picture has a weight of 125 g and it costs 0.85 €. Calculate the costs of 100 g.

# Unassigned

Modeling

7