Slope of the line through each ordered pair of points
(18,-5)(18,20)

Undefined

Step-by-step explanation:

Slope can be found using:

Let's call (18, -5) our first pair, and (18,20) our second

So, x1 is 18, x2 is 18, y1 is -5, and y2 is 20, and we can substitute them in

Since any number divided by 25 is undefined, the slope is undefined

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!

the answer is

a.

x = 42

y = 10

i got it down chief.