Units 3, 4, & 5 Vocabulary Quiz

A function with a constant rate of change that is a straight line when graphed.

• Linear function

• Exponential function

• Quadratic function

• Polynomial function

Which of the following is NOT a method for solving systems of equations?

• Graphing

• Substitution

• Elimination

• nSolve

• Matrices

Which variable do we use to represent the correlation coefficient?

• m

• r
• b

• x

Which of the following are true when graphing a linear inequality?

(SELECT ALL THAT APPLY)

• Shade above for positive slopes; Shade below for negative slopes.

• The line is solid when the y-intercept is positive and dashed when the y-intercept is negative.

• Any point in the shaded area makes the equation true.

In a system of equations, if two distinct lines have the same slope they are ____________ lines and have no solution.

• Intersecting

• Parallel

• Perpendicular

• Positive

If two distinct linear equations have slopes that are negative reciprocals they are ____________ lines and intersect at a right angle.

• Positive

• Parallel

• Perpendicular

• Negative

Which of the following graphs/scatter plots have a positive slope/positive correlation?

(SELECT ALL THAT APPLY)

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Which of the following graphs/scatter plots have a negative slope/negative correlation?

(SELECT ALL THAT APPLY)

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• 
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• 

Which form of linear equations is best used for graphing?

Which form of linear equations is useful when you know at least one point and the slope?