Susan enlarged a rectangle with a height of 6 cm and length of 13 cm on her computer. the length of the new rectangle is 19.5 cm. find the height of the new rectangle.

On enlarging the rectangle, the proportion or ratio of Length to Height will stay the same.

The ratio of original length to height is 13 : 6 
The ratio in enlarged rectangle will stay the same. Let the height of enlarged rectangle is y cm. So we can write:



Therefore, the height in enlarged rectangle will be 9 cm

This is the graph x=1