Mirror coordinates across the y axis with steps. Check transformed points, compare values, and export neat results for classwork today.
| Label | Original X | Original Y | Reflected X | Reflected Y |
|---|---|---|---|---|
| A | 3 | 2 | -3 | 2 |
| B | -4 | 5 | 4 | 5 |
| C | 0 | -3 | 0 | -3 |
Reflection over the y axis changes the sign of the x coordinate. The y coordinate stays the same.
Formula: (x, y) → (-x, y)
This means a point on the right side moves equally left. A point on the left side moves equally right. A point on the y axis remains in the same place because its x value is zero.
The reflect over y axis calculator helps you transform coordinates fast. It mirrors each point across the vertical axis. This is a common geometry operation. Students use it in graphing lessons. Teachers use it for quick examples. It also helps when checking coordinate rules.
A reflection over the y axis changes only one value. The x coordinate changes sign. The y coordinate stays fixed. For example, the point (6, 4) becomes (-6, 4). The point (-2, 7) becomes (2, 7). The point (0, 5) stays the same because it already lies on the y axis.
This tool saves time during homework, revision, and classroom practice. You can test one point or many points together. That makes it useful for polygons, plotted data, and coordinate drills. The output table shows original points and reflected points clearly. This reduces mistakes and improves checking speed.
The calculator supports single point entry and bulk point entry. It also lets you choose decimal precision. After calculation, the result appears above the form. That placement makes the answer easy to see. You can also export the table for later use. CSV files work well for spreadsheets. PDF export is useful for printouts and notes.
You can use this math reflection calculator in coordinate geometry, graph transformations, and symmetry practice. It is useful for school tasks and quick revision. It can also help when checking vertices of shapes before drawing a new graph. Because the rule is simple, this tool is great for learning the pattern.
When reflecting over the y axis, keep the y value unchanged. Reverse only the x value. That single rule solves every point reflection on the y axis.
It means a point is mirrored across the vertical axis. The x value changes sign, while the y value remains unchanged. Distances from the y axis stay equal.
The rule is simple: (x, y) becomes (-x, y). Only the x coordinate changes. The y coordinate stays exactly the same after reflection.
No. A point on the y axis has x = 0. Since negative zero is still zero, the point remains in the same location after reflection.
Yes. Use multiple points mode and enter each point on a new line. You can include a label with the coordinates for cleaner output.
The y axis is vertical. Reflecting across it flips horizontal position only. That changes left and right placement, not up and down placement.
Yes. Enter each vertex as a separate point. The reflected output gives the new coordinates. You can then plot the transformed polygon correctly.
You can export the result table as CSV or PDF. CSV is useful for spreadsheet work. PDF is useful for printing or saving clean records.
Yes. It is useful for practice, checking homework, and learning graph transformations. The step pattern is easy to follow and supports faster understanding.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.