設有兩等差級數，它們的比是（2n+3):(3n+2),試求它們的前11 項之和的比

answer:

(2n+3)(3n+2)

6n^2 + 4n + 9n +6

= 6n^2 + 13n + 6

I am American

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4