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Mathematics 15 Online
OpenStudy (yuliacosta111):

Which set of transformations has been performed on triangle EFG to form triangle E"F"G"? Dilation by a scale factor of 4 followed by reflection over the x-axis Dilation by a scale factor of 2 followed by reflection over the x-axis Dilation by a scale factor of 4 followed by reflection over the y-axis Dilation by a scale factor of 2 followed by reflection over the y-axis

OpenStudy (welshfella):

where's the diagram?

OpenStudy (yuliacosta111):

OpenStudy (welshfella):

Hint: the sides are 4 times longer in the image triangle

OpenStudy (yuliacosta111):

is it c

OpenStudy (welshfella):

look at the figure whci of the anes x or y would be a mirror for the reflection?

OpenStudy (welshfella):

* axes x or y

OpenStudy (yuliacosta111):

i dont understand

OpenStudy (yuliacosta111):

@MrNood

OpenStudy (yuliacosta111):

@Landon34

OpenStudy (anonymous):

If the size of the triangle doubled when creating triangle E'F'G', than the scale factor would be two. If it quadrupled it would be the scale factor of 4. (It did quadruple. FG is 1 unit wide and F'G' is 4 wide. 1 times 4= 4.) Then reflecting across the x axis (the x axis is the line that goes horizontal). |dw:1449858314525:dw|(P.S. ^that says x-axis. Then, if EFG was quadrupled and reflected across the x-axis, E'F"G' would look like this: |dw:1449858389160:dw| Which it doesn't. So It is C. If EFG was quadrupled in size, (x4) and then reflected like a mirror over the y axis ( which is vertical/ up and down) it would look like this. |dw:1449858479696:dw| C is your answer. Hope I helped

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