Chapter R Exam

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School

Prince George's Community College, Largo *

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Course

120

Subject

Mathematics

Date

Feb 20, 2024

Type

pdf

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Uploaded by MagistrateWaterBuffalo3975

1. 2. 3. Academic Statement: I pledge that I will neither give not receive any aid from any other person during this exam, and that the work presented here is entirely my own. Unless otherwise stated, do not use decimals! I understand that I must show ALL work to receive full credit. To continue with this exam, means ''I agree.'' Graph the equation. y x = 1 2 − 4 -10 -8 -6 -4 -2 2 4 6 8 10 -10 -8 -6 -4 -2 2 4 6 8 10 x y Graph the equation y x . = 2 − 2 -10 -8 -6 -4 -2 2 4 6 8 10 -10 -8 -6 -4 -2 2 4 6 8 10 x y Suppose that $ is invested at % interest. Find the amount of money in the account after years if the interest is compounded annually. 20,000 5 6

4. 5. 6. Does the following represent a function? Domain Rover, Sparky, Fido, etc. Correspondence Names Range Every dog in the world Graph the function f(x) . = x − 9 2 -20 -16 -12 -8 -4 4 8 12 16 20 -20 -16 -12 -8 -4 4 8 12 16 20 x y Use the vertical-line test to determine whether the graph is that of a function. (The dashed lines are not part of the graphs.) x y

7 . 8 . Graph f(x). f(x) = 2x, for x < − 1 3, for x = − 1 x − 2, for x > − 1 Write interval notation for the graph. b b + n

9 . Determine the slope and the y-intercept of the line represented by the given equation. Write the y-intercept as an ordered pair. Use fractions or integers. 5x − 3y = 12 1 0 . Use the given point and slope to write a n equation of the line in slope-intercept form. Slope 0; through ( − 3, − 5)

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