Help me plsss I will mark brainliest

Using iready the tutorial does not count as a grade and if your worried about passing the test turn your wifi off count to 10 then click the answer you think is right, if it is right turn wifi back on and click next, if wrong click next and it will kick you out of it then turn wifi back on and go back onto the lesson and repeat until you have the right answer, I always got 100% on my quizs this way

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

b. 2/3

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.