NC Math 1 EOC Review Non-Calculator (2nd Assignment)

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What is a system of equations?

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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 system of equations?

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You can represent a relationship using equations, such as J = M + 3 and 8J + 8M = 120, where J and M are the variables.

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What does it mean if the mean of a data set increases?

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If the mean increases, it indicates that the average value of the data set has risen, often due to the addition of higher values.

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What is the 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 values, it is the average of the two middle 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 sum of three consecutive odd integers?

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Let the middle integer be x. The integers can be represented as (x-2), x, and (x+2). Their sum is (x-2) + x + (x+2) = 3x.

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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, showing the trend of the data.

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How do you determine the equation of a line of best fit?

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The equation can be determined using methods such as least squares regression, which minimizes the distance between the data points and the line.

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What does the inequality 3y - 9 <= 6x represent?

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This inequality represents a region on a graph where the values of y are less than or equal to a certain linear function of x.