Topic 4: Linear Relationships

What is the equation that best describes this graph?

Martin uses a software package to draw this graph.

What equation did he use?

Pragia produced the table of values below, by substituting into a linear equation.

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Dots were used to create a pattern. The first three shapes in the pattern are shown.

The number of dots used in each shape is recorded in the table.

How many dots would be required for Shape 156?

• 316

• 520

• 624

• 936

State the equation of the line.

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