Question

I need help how to do this...? What exactly is this process of math problem called?

h(x) = 7 -x
1) Evaluate h(-1/8)

Answer 1

hey

Answer 2

Evaluation of functions.

Answer 3

thats what its called and how would u possibly do that if u arn't given any number for h(x)?

Answer 4

i think it is called "evaluating a function" but i am not sure
in any case
\[h(\frac{1}{8})=7-\left(-\frac{1}{8}\right)\]

Answer 5

so h(x) is the function it does not mean h * x ... h is the function and x is the variable for the input of the function.

Answer 6

h(-1\8) inside ?

Answer 7

so the input of x is (1/8)

Answer 8

so "h(x) = 7 - x" is the function definition so if I put something like h(3) where ever I saw an x I put a 2 in its place so h(2) = 7 - 2

Answer 9

\[h(\diamondsuit )=7-\diamondsuit\] put a \(-\frac{1}{8}\) where you see \(\diamondsuit\)

Answer 10

so h(2) = 5

Answer 11

good explanation @satellite73

Answer 12

so basically are u trying to get the h alone when all is said and done ?

Answer 13

good explanation @satellite73

Answer 14

so far i have h (-1/8) = 7 - (-1/8)

Answer 15

lol thanks, just showing off the \(\diamondsuit\)
you could also write
\[h(\clubsuit)=7-\clubsuit\]

Answer 16

I plug in the - into the (-1/8) so I get now is 7 + 1/8

Answer 17

is that right ?

Answer 18

yes

Answer 19

so now I can plus the 7 into 1/8 and get h(-1/8) = 57/8

Answer 20

but what do I do now?

Answer 21

yeah, although being rather simpleminded i would probably have written \(7+\frac{1}{8}=7\tfrac{1}{8}\)

Answer 22

go have a cup of coffee i guess, because you are done

Answer 23

ah yes thanks yess!

Answer 24

so now thats my answer because we can't do anything where does the h go?

Answer 25

h(-1/8) = 7(1/8)

Answer 26

it doesn't "go" anywhere
\(h\) is a function, in this case a rather simple linear function
it is a rule that assigns to each number \(x\) the number \(7-x\)

Answer 27

so my answer is h = -7

Answer 28

so for example \(h(3)=4,f(5)=2,h(7)=0\) etc

Answer 29

because I divided the (-1/8) OHH i seee

Answer 30

no you had it right the first time

Answer 31

i think i have confused you
you had it right at the beginning

Answer 32

oh where u said h(-1/8) = 7(1/8) final answer

Answer 33

\[h\left(-\frac{1}{8}\right)=7-\left(-\frac{1}{8}\right)=7+\frac{1}{8}=\frac{57}{8}\]

Answer 34

i meant the mixed number \(7\tfrac{1}{8}\) as in seven and one eighth
sorry to confuse you

Answer 35

oh gotcha so it should look like this

h(-1/8) = 57/8 and now do I divide the (-1/8) to the 57/8 ?

Answer 36

no now you are done

Answer 37

just leave the answer like that no simplifying

Answer 38

omg i see what u did nvm I got it my final answer is 57/8 right ? no h = 57/8

Answer 39

is this my final answer?

Answer 40

h = 57/8

Answer 41

?