These Grade 9 Math practice tests cover the coordinate plane, quadrants, axes, ordered pairs, distance, midpoint, slope, equations of lines, intercepts, parallel and perpendicular lines, reflections, rotations, translations, dilations, and coordinate-plane geometry applications.
Read each ordered pair as (x, y), preserve positive and negative signs, choose the appropriate coordinate formula, and check the result on a graph or in the original geometric context.
For more Grade 9 Math practice, return to the Grade 9 Math category.
3. Test
Practice Grade 9 Math questions about the coordinate plane, quadrants, distance, midpoint, slope, lines, transformations, dilations, and coordinate geometry applications.
Choose the best answer. Read coordinates in order, apply formulas carefully, preserve signs, and connect algebraic rules to geometric positions and measurements.
Please select an answer first.
Correct answer: A
The correct answer is 2.
The slope is (6 - 2)/(3 - 1) = 4/2 = 2.
Please select an answer first.
Correct answer: B
The correct answer is -1.
The slope is (-1 - 5)/(4 - (-2)) = -6/6 = -1.
Please select an answer first.
Correct answer: C
The correct answer is 0.
A horizontal line has zero vertical change, so its slope is 0.
Please select an answer first.
Correct answer: D
The correct answer is Undefined..
A vertical line has zero horizontal change, so the slope formula would divide by zero.
Please select an answer first.
Correct answer: A
The correct answer is .
In slope-intercept form y = mx + b, m = 3 and b = -2.
Please select an answer first.
Correct answer: B
The correct answer is .
The coefficient of x in slope-intercept form is the slope.
Please select an answer first.
Correct answer: C
The correct answer is .
The slope is (9 - 5)/(2 - 0) = 2 and the y-intercept is 5.
Please select an answer first.
Correct answer: D
The correct answer is 4.
Nonvertical parallel lines have equal slopes.
Please select an answer first.
Correct answer: A
The correct answer is .
Perpendicular nonzero slopes are negative reciprocals, so the slope is -1/2.
Please select an answer first.
Correct answer: B
The correct answer is .
Use point-slope form y - 1 = -2(x - 3), which simplifies to y = -2x + 7.
