Is every integer a rational number?

a rational number is one you can express as a ration or fraction, now, an integer is just a number all by its lonesome, no decimals or else, however, we can express any number as a rational, for example a few integers

2 = 2/1 <-- rational

3 = 3/1 <--- rational

and so on.

the image of (6, 9) under a dilation is (4, 6). the scale factor is