8th Grade Math Fall Final Exam Practice

In a science quiz, Emily answered 5/6 of the questions correctly, John answered 2/3 of the questions correctly, Sarah answered 3/5 of the questions correctly, and Mike answered 4/7 of the questions correctly. List the students in order by name of who answered the MOST questions correctly, to who answered the LEAST questions correctly.

• Emily, John, Sarah, Mike

• John, Emily, Mike, Sarah

• Emily, Sarah, John, Mike

• Sarah, Mike, Emily, John

What was the original height of the tree before it was cut down?

• 70 feet

• 29 feet

• 49 feet

• 841 feet

Which situation can be represented by this equation? 15x = 20 + 10x

• Alex saves $10 per week. Jamie saves $15 per week. How many weeks, x, would it take for Alex and Jamie to save the same amount of money?

• Alex paid a membership fee of $20 plus $15 per month for a gym. Jamie paid $10 per month for a gym. How many months, x, would it take for Alex and Jamie to pay the same total amount?

• Alex paints 10 walls per day. Jamie paints 15 walls per day and started with 20 walls already painted. How many days, x, would it take for Alex and Jamie to have painted the same number of walls?

• Alex earns $15 per hour by freelancing. Jamie earns $10 per hour by freelancing. Jamie already has $20. How many hours, x, would Alex and Jamie need to work to have the same amount of money?

Find the slope and y-intercept of the line represented by the equation.

• The slope is 5/2 and the y-intercept is -1.

• The slope is 2/5 and the y-intercept is 1.

• The slope is 1/2 and the y-intercept is 3.

• The slope is 3/5 and the y-intercept is 2.

Find the slope and y-intercept of the line represented by the equation.

• The slope is -2/3 and the y-intercept is -2.

• The slope is 2/3 and the y-intercept is -2.

• The slope is -2/3 and the y-intercept is 2.

• The slope is 3/2 and the y-intercept is -2.

Solve the equation:

• 1

• 2

• 3

• 4

Which statement describes the mapping diagram?

• The mapping represents y as a function of x, because each y-value corresponds to exactly one x-value.

• The mapping does not represent y as a function of x, because two of the x-values correspond to the same y-value.

• The mapping represents y as a function of x, because each x-value corresponds to exactly one y-value.

• The mapping does not represent y as a function of x, because there are more x-values than different corresponding y-values.

Triangle ABC and A'B'C' are shown on the coordinate plane. Which algebraic representation shows how to find the coordinates of triangle A'B'C'?

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Which equation represents the relationship shown in the table?

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Does the graph shown below represent a proportional relationship? Explain your answer.

• Yes, because it is a straight line that goes through the origin.

• No, because the time/distance ratios are not equal.

• Yes, because the x- and y-axis are labeled.

• No, because not enough information is given.