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Part A: do the data in the 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 ?

Part A do the data in the table represent a function Justify your answer Part B compare the data in the table with the relation fx3x10 Which relation has a grea class=

Respuesta :

DeanR
Sure it's a function.  Each input x in its domain gives a single value for y, which is all we need for a function.

f(8)=3(8)-10=24-10=14

That's bigger than the value of the table function at 8, which is 4.

f(x)=80 means

80 = 3x - 10

90 = 3x

x = 30


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