These Grade 8 Math practice tests cover graphing linear functions from equations, tables, points, slope, intercepts, and real-world situations.
Start with the slope and y-intercept, plot the intercept, and use the rate of change to find additional points. For tables and contexts, verify that the same linear rule works for every given value.
For more Grade 8 Math practice, return to the Grade 8 Math category.
3. Test
Practice Grade 8 Math questions about graphing linear functions, tables, points, intercepts, slope-intercept form, transformations, and real-world models.
Choose the best answer for each question. Use the equation, table, point, intercept, and graph information together to check your answer.
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 constant term in slope-intercept form is the y-intercept, so .
Please select an answer first.
Correct answer: C
The correct answer is .
The point with gives the y-intercept -4; with slope 2, the equation is .
Please select an answer first.
Correct answer: D
The correct answer is .
The line has intercepts and , giving slope 1 and equation .
Please select an answer first.
Correct answer: A
The correct answer is .
Parallel lines have the same slope and different y-intercepts. The slope is 5 in .
Please select an answer first.
Correct answer: B
The correct answer is .
Both equations have constant term 5, so both cross the y-axis at .
Please select an answer first.
Correct answer: C
The correct answer is .
A horizontal line has a constant y-value, so its equation is .
Please select an answer first.
Correct answer: D
The correct answer is .
Substitute and into .
Please select an answer first.
Correct answer: A
The correct answer is .
Set : , so .
Please select an answer first.
Correct answer: B
The correct answer is .
Use with and .
