All Tasks
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.
# Proportionality
Modeling
7
Gradient of a street
The picture shows a traffic sign. This gives 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.
# Proportionality
# Percentage calculation
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.
# Direct proportionality & rule of three
Modeling
7
Line equation
What is the equation of the line passing through the points $P=(1, -5)$ and $Q=(3, 3)$?
# Linear functions
Training
8
Slope + point (B_E)
Cross the law of the linear function whose graph passes
through the point $(2, 1)$ and has a slope of $3$?
# Linear functions
Training
8