8th Grade Grid Worksheets
Free grid worksheets with answer key. No login or account needed. From reading a coordinate plane to graphing positive and negative coordinates, we've got you covered. 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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Transforming On a Coordinate Plane
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About these worksheets
Students practice transforming shapes on the coordinate plane. Worksheets cover reflecting shapes across the x- and y-axes, rotating shapes by 90°, 180°, and 270°, translating shapes in any direction, and calculating slope using slope-intercept form. Aligned with eighth grade geometry standards.
8g3
- Reflect a shape across the x-axis or y-axis to draw its mirror image.
- Use the x- and y-coordinates of points to plot the reflected shape in the right place.
- Apply the reflection rules to change coordinates correctly, like flipping the sign of x or y.
- Check that the original and reflected shapes are the same size and the same distance from the axis.
8g3
- Rotate a shape on a coordinate grid by 90°, 180°, or 270° in the direction given.
- Use the origin as the center of rotation and keep the shape’s size and orientation changes correct.
- Plot the new points after a rotation and connect them to redraw the rotated shape.
- Use rotation rules to predict how (x, y) coordinates change when turning a figure.
8g3
- Practice sliding a shape left, right, up, or down on a coordinate grid without turning it.
- Use ordered pairs (x, y) to track how each vertex moves during a translation.
- Follow a translation rule or vector (like (x + 3, y - 2)) to move a figure the correct amount.
- Plot the translated points and connect them to draw the new image in the right place.
- Check that the translated shape stays the same size and orientation as the original.
8sp3
- Practice rearranging a linear equation into y = mx + b form to identify the slope
- Isolate y by moving the x term to the other side and dividing by the coefficient of y
- Work with slopes that are whole numbers, negative numbers, and fractions
About these worksheets
These worksheets focus on identifying lines with the same slope using similar triangles. Students compare the rise-over-run ratios of triangles to determine which lines are parallel. Aligned with eighth grade expressions and equations standards.
8ee6
- Practice finding slope as the ratio of a triangle's height to its base (rise over run)
- Compare ratios to identify which triangle has the same slope as the given one
- Simplify or scale ratios to determine if two triangles represent the same steepness
8f2
- Practice finding the rate of change (slope) from a description of how x and y increase or decrease together
- Write the slope as a fraction using the change in y over the change in x
- Determine the correct sign (positive or negative) based on whether x and y are increasing or decreasing
8f2
- Practice finding the rate of change by plugging x values into an equation and seeing how y changes each time
- Fill in a table of x and y values, then calculate the difference between consecutive y values to find the rate of change
- Work with equations written in different forms and simplify them to spot a constant rate of change
8f2
- Read points from a graph and use them to find how much y changes when x changes.
- Find the rate of change by counting the rise and run between two points on a line.
- Tell whether a line shows a positive, negative, or zero rate of change.
8f2
- Find the rate of change (slope) from a linear equation written as y = mx + b.
- Tell whether the rate of change is positive, negative, zero, or not a whole number by looking at the slope.
- Identify the y-intercept in slope-intercept form and explain what it means as a starting value.
- Compare two equations by deciding which one changes faster based on their slopes.
8f2
- Practice finding the rate of change from a table by calculating how much y changes for each unit change in x
- Use the formula (change in y) ÷ (change in x) between pairs of values in the table
- Work with tables that include negative numbers and values that aren't evenly spaced
8f1
- Practice matching a function equation to the correct table of x and y values
- Plug x values into a given equation to check if the y values in each table are correct
- Work with different types of functions including addition, multiplication, and combinations of both
8f2
- Find the y-intercept from an equation by spotting the constant term.
- Read the y-intercept directly from slope-intercept form (y = mx + b).
- Rewrite an equation into y = mx + b form so the y-intercept is easy to see.
8f2
- Find the y-intercept on a graph by locating where the line crosses the y-axis.
- Read the y-value at x = 0 and write it as an ordered pair (0, y).
- Use the graph’s scale and tick marks to get the correct y-intercept value, including negatives.
- Tell the difference between the y-intercept and other points where the line crosses the x-axis.
8f2
- Practice finding the y-intercept from a table by determining the value of y when x equals 0
- Use the given equation to calculate y at x = 0 when that row isn't directly in the table
- Work with different types of equations including simple, multi-step, and those involving multiplication and subtraction
8f2
- Compare the rate of change of a function shown as a graph versus one shown as a table
- Determine which function has the greater rate of change
- Find the slope from a graph by reading the rise and run between plotted points
8f2
- Draw a straight line on a graph when you are given its rate of change (slope).
- Use rise and run to plot points and keep the line going in the correct direction.
- Tell whether a line has a positive or negative slope by how it moves left to right.
