Exam 10: Graphing Equations and Inequalities

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Solve. Assume the exercise describes a linear relationship. When writing a linear equation, write the equation in slope-intercept form. -When making a telephone call using a calling card, a call lasting 3 minutes costs $1.00. A call lasting 11 minutes costs $2.60. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that Models the cost of making a call lasting x minutes.

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Complete the ordered pairs so that they are solutions of the given linear equation. -y = -4x - 24; (-7, ), (-24, ), (0, )

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Graph the inequality. - y3xy \geq 3 x  Graph the inequality. - y \geq 3 x

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Graph the inequality. - x+4y5x + 4 y \geq - 5  Graph the inequality. - x + 4 y \geq - 5

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Use the vertical line test to determine whether or not the graph is a graph of a function. -Use the vertical line test to determine whether or not the graph is a graph of a function. -

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Decide whether a line with the given slope is upward sloping, downward sloping, horizontal or vertical. -m is undefined

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Determine whether the lines are parallel, perpendicular, or neither. -6x + 2y = 8 15x + 5y = 23

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Solve. -y varies directly asy as x x2x ^ { 2 } 2. If y = 63 when x = 3, find y when x = 5.

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Find the slope of the line that passes through the points. -(-2, -5)and (2, -4)

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Write an equation to describe the variation. Use k for the constant of proportionality. -x varies inversely as s

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Fill in the blank with one of the words or phrases listed below. y-axis x-axis solution linear standard point-slope x-intercept y -intercept y x slope relation domain range direct inverse slope-intercept function -To find an x-intercept of a graph, let _______= 0.

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Graph the inequality. -x + 2y > 0 Graph the inequality. -x + 2y > 0

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Fill in the blank with one of the words or phrases listed below. y-axis x-axis solution linear standard point-slope x-intercept y -intercept y x slope relation domain range direct inverse slope-intercept function -The form Ax + By = C is called _______form.

(Multiple Choice)
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Find an equation of the line passing through each pair of points. Write the equation in the form Ax + By = C. -(5, 8)and (0, -5)

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Find the equation of the line. Write the equation in the form Ax + By = C. -Passes through (7, 59)and (1, 11)

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State whether the graph of each inequality includes its corresponding boundary line. -x - y \leq 4

(True/False)
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Fill in the blank with one of the words or phrases listed below. y-axis x-axis solution linear standard point-slope x-intercept y -intercept y x slope relation domain range direct inverse slope-intercept function -A set of ordered pairs is called a(n)_______.

(Multiple Choice)
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Find an equation of the line passing through each pair of points. Write the equation in the form Ax + By = C. -(-6, 2)and (-1, 5)

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Use the slope-intercept form to graph the equation. -7x + y = 0 Use the slope-intercept form to graph the equation. -7x + y = 0

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Identify the intercepts. -Identify the intercepts. -

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