Question

The graph of y=10.2 is decreasing. True or False?

Answer 1

Its a stright line parllel to x-axis.....@bless

Answer 2

Opss sorry.. My bad. 10.2^x

Answer 3

then false...

Answer 4

Why? can you please explain. There's a big test tomorrow. I want to understand

Answer 5

see this link it explains clearly.....
http://www.wolframalpha.com/input/?i=y%3D10.2%5Ex

Answer 6

there is a trick, do you want to know?

Answer 7

yes

Answer 8

yes @Loser66

Answer 9

to this kind of problem, you just plug x =1, x =2 into the expression, x from 1 to 2 , it means x increases, right?
then y = 10.2 for x =1
y = 104.04 for x =2
you see, x \(\uparrow\) y\(\uparrow\)
therefore, it increases,
while the statement said it decreases
so, the statement is FALSE

Answer 10

what if the x is equals to -1? Then the graph will look like decreasing?

Answer 11

ok, x =-1 y = 1/10.2
x = -2 , y = 1/104.04
BUT from -2 to -1 , x is increasing (-2< -1)
and y from 1/104.04 to 1/10.2 is increasing , too ( 1/104.04<1/10.2, right?)
just to confirm, whenever it increases, it increases on the whole interval,

Answer 12

@Loser66 thank u so much !!

Answer 13

got it?? hehehe, glad to hear

Answer 14

Yes :)