7th Grade Final Exam

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Factor the expression: 5x - 30

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5(x - 6)

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-17

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What does it mean for a graph to show direct variation?

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It means the graph is proportional, showing a constant ratio between two variables.

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If x = 5, what is the scale factor to get from triangle ABC to triangle DEF if the corresponding side lengths are halved?

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What is the definition of a factor in mathematics?

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A factor is a number or algebraic expression that divides another number or expression evenly.

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What is the definition of direct variation?

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Direct variation is a relationship between two variables where one is a constant multiple of the other.

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What is the formula for finding the scale factor between two similar figures?

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Scale factor = (length of side in figure 1) / (length of corresponding side in figure 2)

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-7

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What is the definition of a proportional relationship?

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A proportional relationship is one where two quantities maintain a constant ratio.