  #### Can you find the number?

If the linear functions $y = -2x$ and $y = (a + 2)x + 5$ are parallel. The number $a$ is:

# Linear functions

Training
8  #### Prom night!

The cost of the annual Dance Night is depending on the number of students that will participate according to the value table of the picture. Can you find the linear’s function slope that represents the cost depending on the number of students that will attend to your schools prom night?

# Linear functions

Training
8    #### Lorry

A lorry can have a total weight of 40t. The empty weight is 21.7t. At a station bagger takes 1.5t on the lorry with every scoop. Calculate the number of scoops, the lorry can have.

# Unassigned

Modeling
8     #### Position of two graphs II

These graphs of the two linear functions $y_2 = 2x -1$ and $y_2 = -\frac{x}{2} +289$ are... [Select the right answer below.]

# Linear functions

Training
8     #### Gradient and term

Cross the right statements for the function y = mx with the gradient m.

# Unassigned

Reasoning
8     #### Graph_parallel_perpendicular (Intermediate-Exercising)

The lines $r, s, t, u, v$ are represented in the figure. State whether the following statements are true (T) or false (F). - The lines $u$ and $v$ are parallel. **________** - Line $s$ is perpendicular to line $v$. **________**

# Linear functions

Training
9