Question

Graph the exponential function.
y = 5(2)^x

Answer 1

@S0fw0N

Answer 2

can you plot points on graph, like given any point (a,b) can u plot it on graph ?

Answer 3

first find, what is y=...? when x=0
and u get a point like (0,b)

Answer 4

a http://postimage.org/image/7cucouy11/38448a96/
b http://postimage.org/image/r0s1jhghl/6b6c5f99/
c http://postimage.org/image/dkgt3w279/dc096e93/
d http://postimage.org/image/xm39a3jgv/2945675d/

Answer 5

i think its c

Answer 6

http://www.wolframalpha.com/input/?i=y+%3D+5%282%29%5Ex

Answer 7

oh, can u use wolf ?

Answer 8

pick a few points for x to get a y-value
plot on a graph.

Answer 9

you will get the y-intercept if u put x=0

Answer 10

u know what that means ?
you get a point where the graph cuts y-axis.

Answer 11

when i put x=o i get y=5 on wolf

Answer 12

so, the y-intercept is (0,5)
which eliminates b,c choices

Answer 13

right ?

Answer 14

i thought it was c 0.0

Answer 15

to decide among a or d
you can put x=1, and see what you get as y
and the point will be of the form, (1,b)
and its not c.

Answer 16

its A
i just turned it and its a

Answer 17

turned it ?

Answer 18

yea the graph they had on wolf was C but if u turn it its A and its (1,5)

Answer 19

when you put x=1,
u get y= 5 (2)^1 = 10
so the point is (1,10)
which rules out d, if you observe....

Answer 20

Since it's all positive numbers, the line will be going up as you go to the right, so you can immediately rule out any graphs where the line goes down as you go the right. Which leaves only a and c. Then you can check values as hartnn showed.

Answer 21

the awsner was A, i got a 90%

Answer 22

a is correct :)

you can also plot graphs on google btw. Just type in 5(2)^x and hit enter.