A) Viết hàm hồi quy tổng thể, hồi quy mẫu và giải thích ý nghĩa ước lượng các hệ số góc.

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.

150.6

all i did was i multiplied 5.02 by 30