Question

Medal!
Input
(x) 2 4 6 8
Output
(y) 1 2 3 4


Part A: Do the data in this table represent a function? Justify your answer.

Part B: Compare the data in the table with the relation f(x) = 3x – 10. Which relation has a greater value when x = 8?

Part C: Using the relation in Part B, what is the value of x if f(x) = 80?

Answer 1

PART A) every x values goes t0 ONLY one y value
A function is when x values does not repeat , if there is same x value more than onc than relation is a not function
PART B) substitute x value and then solve for f(x)
in the table when x = 8 y =what ?
for example when x=6 y =3
PART C) substitute 80 for f(x) and then solve for x

Answer 2

?

Answer 3

y = f(x) = x/2

Answer 4

thats the first one

Answer 5

B) f(x) =3x-10------(1) and f(x) = x/2-----(2)
if x=8 plug in (1) and (2) compare

(1)
f(8) = 3*8-10
= 24-10
=14
can u do it same for (2) and compare