These Grade 8 Math practice tests cover slope, rise and run, the slope formula, tables, graphs, slope-intercept form, positive and negative rates, units, and real-world applications.
Find the change in y and the change in x, divide in the same order, and include the correct sign and units. Then explain what the rate means in the situation.
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4. Test
Practice Grade 8 Math questions about slope, rise and run, rate of change, tables, graphs, equations, units, and real-world applications.
Choose the best answer for each question. Include signs and units when interpreting a slope or rate of change.
Please select an answer first.
Correct answer: A
The correct answer is .
In , the coefficient of x is the slope, so .
Please select an answer first.
Correct answer: B
The correct answer is .
The coefficient of x is -4, so the line decreases 4 units in y for each 1-unit increase in x.
Please select an answer first.
Correct answer: C
The correct answer is .
The coefficient of x is , which is the slope.
Please select an answer first.
Correct answer: D
The correct answer is .
A horizontal line has constant y-value, so its vertical change and slope are 0.
Please select an answer first.
Correct answer: A
The correct answer is Undefined.
A vertical line has no change in x between distinct points, so the denominator in the slope formula is 0.
Please select an answer first.
Correct answer: B
The correct answer is They have the same slope and are parallel..
Both equations have slope 2 but different y-intercepts, so they are distinct parallel lines.
Please select an answer first.
Correct answer: C
The correct answer is .
Substitute and into .
Please select an answer first.
Correct answer: D
The correct answer is .
.
Please select an answer first.
Correct answer: A
The correct answer is .
.
Please select an answer first.
Correct answer: B
The correct answer is .
In slope-intercept form , is the slope and is the y-intercept.
