1st Semester Review

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What is an algebraic expression?

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An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 4(n + 3) - 6 is an algebraic expression.

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How do you translate a phrase into an algebraic expression?

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To translate a phrase into an algebraic expression, identify keywords and their mathematical meanings. For example, 'six less than' indicates subtraction, and 'four times' indicates multiplication.

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What does 'scale drawing' mean?

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A scale drawing is a representation of an object or space that is proportionally reduced or enlarged. For example, in a scale drawing where 1 inch equals 5 feet, every inch represents 5 feet in reality.

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How do you calculate actual dimensions from a scale drawing?

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To calculate actual dimensions from a scale drawing, multiply the measurements in the drawing by the scale factor. For example, if a drawing measures 3 inches and the scale is 1 inch = 5 feet, the actual dimension is 3 x 5 = 15 feet.

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What is a graph in mathematics?

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A graph is a visual representation of data that shows the relationship between two or more variables. It can help identify trends and patterns.

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What does it mean to simplify an expression?

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To simplify an expression means to reduce it to its simplest form by combining like terms and performing operations.

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What is a scale model?

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A scale model is a physical representation of an object that maintains accurate proportions but is smaller or larger than the actual object.

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How do you determine the correct answer from multiple choices?

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To determine the correct answer from multiple choices, evaluate each option based on the information given and eliminate those that do not fit.

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What is the relationship between hours worked and earnings in a graph?

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The relationship between hours worked and earnings in a graph is typically linear, meaning that as the number of hours increases, the earnings also increase at a constant rate.

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What does 'earning $20 for working 5 hours' imply?

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It implies a rate of pay, which can be calculated as $20/5 hours = $4 per hour.