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India
Class IX

Identifying key features of Linear functions

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

On which of the following graphs is the linear function decreasing?

Easy
< 1min

Is the equation $x=7y$x=7y a linear equation?

Easy
< 1min
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Outcomes

9.CG.CG.1

The Cartesian plane, coordinates of a point, names and terms associated with the coordinate plane, notations, plotting points in the plane, graph of linear equations as examples; focus on linear equations of the type ax + by + c = 0 by writing it as y =mx + c and linking with the chapter on linear equations in two variables.

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