Choose the equation of the line passing through the points (2,-5) and (4,11). y = (1/8)x - 21/4 y = 8x - 21 y = 8x - 11 y = 8x + 11

Slope = (11 + 5)/(4 - 2) = 16/2 = 8

y = mx + b

b = y - mx

b = 11 - (8)(4)

b = 11 - 32

b = -21

Equation: y = 8x - 21

Answer : y = 8x - 21

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!