Question

Need help. The equation of a function is y=2^x -4
The book wants me to find the coordinates of 2 given points, Which i have done. A = (0,-3) and B = (2,0). However the book is asking for the values of these points, in the answers it says A=4 and B=0.5 How do you do this? Please explain

Answer 1

@Warlord , If possible please attach the original question because I am unable to understand your question

Answer 2

the book seems to think that the coordinate (0,-3) on this graph made by y=2^x -4 has a value of 4. I am not sure how this works

Answer 3

will a photo of the book work?

Answer 4

yes

Answer 5

ok doing it now

Answer 6

theres the photo

Answer 7

it's asking for the co-ordinates for the Capital-letters (the points)

and the values of the lower-case letters (the constants).
A=(0,-3) is right
a=4 is right

Answer 8

umm im not sure what you mean by the values of the lower case letters, there are no lower case letters in this case

Answer 9

\[\Large y=\sqrt{x+a}\]

Answer 10

the function of the first graph is \[y=2^{x}-4\]

Answer 11

so why is the value of the point (0,-3) four? and why is the value of the point (2,0) zero point five

Answer 12

it is not.
a= 4 is from the second equation in the list
the points A,B,C,D,E,F,G,H,I have co-ordinates , not values..

the constants a,b,c,d,e,f,g,h,i have values

Answer 13

OH dear god, i see now

Answer 14

thankyou very much