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.
1. 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 .
Substitute : .
Please select an answer first.
Correct answer: B
The correct answer is .
Substitute : .
Please select an answer first.
Correct answer: C
The correct answer is .
Every point on the x-axis has a y-coordinate of 0, so lies on it.
Please select an answer first.
Correct answer: D
The correct answer is .
In , the y-intercept is . Here .
Please select an answer first.
Correct answer: A
The correct answer is .
Use slope-intercept form with and .
Please select an answer first.
Correct answer: B
The correct answer is .
For , , so is on the line.
Please select an answer first.
Correct answer: C
The correct answer is .
The y-values increase by 3 and the value at is 5, so .
Please select an answer first.
Correct answer: D
The correct answer is It crosses the y-axis at 2 and falls 1 unit for each 1 unit to the right..
The equation has y-intercept 2 and slope -1, so the graph starts at 2 on the y-axis and decreases as x increases.
Please select an answer first.
Correct answer: A
The correct answer is .
Set : , so and the intercept is .
Please select an answer first.
Correct answer: B
The correct answer is .
Set . Then , so the y-intercept is .
