Find the common difference of the arithmetic sequence -11, -20, -29,..

Step-by-step explanation:

Firstly, let’s define the common difference of an arithmetic sequence :

it’s the real number that we add to a term of the sequence to get the next term.

→ (-20)-(-11)=-9 ,here we added (-9) to (-11) to get (-20)

→ (-29)-(-20)=-9 ,here we added (-9) to (-20) to get (-29)

conclusion: the common differenc is -9

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