2. Functions, relations and graphs
Interactive practice questions
Consider the following.
a
Which of the following is the graph of a linear relationship?
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A
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B
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C
b
What makes that graph linear, but not the other two?
In a linear relationship, the $y$y value is always increasing.
A
In a linear relationship, the $y$y value changes at a constant rate.
B
In a linear relationship, the $y$y value changes at a faster and faster rate.
C
Easy
< 1min
The diagram shows the graph of a straight line with positive gradient.
Which of the following statements are true of this graph? Select all the correct options.
Easy
1min
A straight line graph has a positive $y$y-intercept and a positive $x$x-intercept. Which of the following must also be true of the straight line graph?
Easy
< 1min
Select the two points that fill in the gaps to make the statement true.
Easy
2min
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