Question

help me with quadratics?
(x+3)(x-3)
x = 3
y = -9
I have graphed.
i just dont understand : describe if the average rate of change is increasing or decreasing, from left to right. Justify your observations with calculations. like how do i do/start this?

Answer 1

im so confused, i really need help understanding this.

Answer 2

my work

Answer 3

what is it asking in the book?

Answer 4

explain whether the average rate of change is increasing or decreasing, from left to right. Justify your observations by comparing the slopes calculated between at least three different pairs of points.

Answer 5

ohhhh

Answer 6

u just take 2 points for example

Answer 7

when x=3 and when x=0

Answer 8

look at the graph when x=0...its is at -9....when x=3...it is at 0....if u follow the line it is increasing between those points

Answer 9

and u then u take another set of points and do the same

Answer 10

yea but its asking explain the situation between points

Answer 11

so if we took when x=3 and when x=0

Answer 12

it would be decreasing

Answer 13

oh kk

Answer 14

im so confused...

Answer 15

gras can you help me?

Answer 16

dude, chill, i have two people spewing information at me ! @Crazyandbeautiful

Answer 17

make a table for that equations plug in x-values -4 through -3...the y values should be decreasing

Answer 18

whereas if u plug in a different set of values they increase like from x=0,x=1,x=2,x=3...y values for these are -9,-8,-5...they are increasing

Answer 19

x=-4,x=-3,x=-2 y values:7,0,-5 therefore decreasing

Answer 20

why do we have some increasing and some decreasing?

Answer 21

its because it is a parabola

Answer 22

it has a loop...so they just want u to pick 3 pairs of point and establish the flow: is it increasing?decreasing?

Answer 23

thank you!

Answer 24

the flow is decreasing?

Answer 25

@Grasberk