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coordinate planes Worksheets

Free algebra worksheets with answer key. No login or account needed. Below are a variety of topics from simplifying expressions or identifying coefficients to solving inequalities, graphing lines, and finding combinations. A grading column and quick grade scale maker grading a breeze and a modified pages help with lower level learners or when just introducing a topic. Great for teachers or for homeschool.

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Coordinate Planes

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Coordinate Planes

About these worksheets

These worksheets bring together coordinate geometry and algebraic reasoning. Students use similar triangles to find missing coordinates and rise values, rotate shapes around the origin, and identify points of intersection by solving systems of equations. Aligned with eighth grade standards, these activities strengthen graphing skills and spatial reasoning on the coordinate plane.

coordinate planes Worksheets - Finding Rise using Similar Triangles worksheet

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Finding Rise using Similar Triangles

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Use similar triangles on a graph to figure out a missing rise between two points on a line.
Set up and solve a proportion using rise and run to keep the slope the same.
Check that your answer makes sense by comparing slopes from different triangles on the same line.

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coordinate planes Worksheets - Finding Missing Coordinates Using Similar Triangles worksheet

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Finding Missing Coordinates Using Similar Triangles

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Find a missing x- or y-coordinate on a graph by using similar triangles.
Set up and solve a proportion from matching side lengths in two similar triangles.

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coordinate planes Worksheets - Rotating Around Axis worksheet

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Rotating Around Axis

Practice rotating points and shapes around the origin on a coordinate plane.
Tell the difference between clockwise and counterclockwise rotations.

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coordinate planes Worksheets - Identifying Point of Intersection with Equations worksheet

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Identifying Point of Intersection with Equations

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Find the exact point where two lines cross by solving both equations together.
Use substitution to plug one equation into the other and solve for x and y.
Use elimination to combine equations and solve for the ordered pair.
Check your solution by plugging the x and y values back into both equations.

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