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Carrie is organising a fundraiser.

The cost of hiring the venue and the band is $2500. The cost of providing meals is $50 per person.

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Dependent variable - the variable that is measured and changes

Independent variable - the variable that impacts the dependent variable

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Think about:

Which variable is plotted on the x-axis?

Which variable is plotted on the y-axis?

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Break-even - when the money earned exceeds the cost of the event

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Using the graph, how many tickets need to be sold for Carrie to break even?

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At what rate does the cost of the function increase?

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At what rate does the cost of the function increase?

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Hint

Remember the general form of linear equations: y = mx + b

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If Carrie sells 300 tickets. How much profit did the fundraiser make?

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If Carrie sells 300 tickets. How much profit did the fundraiser make?

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Hint

Use the equation you just created