Use the regression calculator to compare students’ SAT scores based on their IQ scores. A 2-column table with 8 rows. Column 1 is labeled I Q with entries 115, 84, 111, 120, 105, 98, 96, 88. Column 2 is labeled S A T with entries 1,440, 780, 1,20, 1,560, 1,240, 1,200, 1,000, 920.

The trend line shows correlation.
The equation of the trend line is .

step-by-step explanation:

in which figure is point g a centroid

is there a question here?

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb