NC Math 1 EOC Review Non-Calculator

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What is a system of equations?

Back

A system of equations is a set of two or more equations with the same variables. The solution is the point(s) where the equations intersect.

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How do you represent a relationship between two variables in a linear equation?

Back

A linear equation can be represented in the form y = mx + b, where m is the slope and b is the y-intercept.

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What does the slope of a line represent?

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The slope of a line represents the rate of change of y with respect to x. It indicates how steep the line is.

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What is the meaning of median in a data set?

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The median is the middle value when the data set is ordered from least to greatest. If there is an even number of observations, it is the average of the two middle numbers.

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What is the mean of a data set?

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The mean is the average of all the numbers in a data set, calculated by dividing the sum of the values by the number of values.

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What is standard deviation?

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Standard deviation is a measure of the amount of variation or dispersion in a set of values. A low standard deviation means the values tend to be close to the mean.

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What are consecutive odd integers?

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Consecutive odd integers are integers that follow one another in the sequence of odd numbers, such as 1, 3, 5 or 11, 13, 15.

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How do you find the equation of a line given two points?

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To find the equation of a line given two points (x1, y1) and (x2, y2), first calculate the slope (m) using m = (y2 - y1) / (x2 - x1), then use the point-slope form y - y1 = m(x - x1).

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What is a line of best fit?

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A line of best fit is a straight line that best represents the data on a scatter plot. It minimizes the distance between the line and all the points.

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What is the relationship between the sum of angles in a triangle?

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The sum of the interior angles in a triangle is always 180 degrees.