Which set of ordered pairs ia a function

For something to be a function, an input (x value) can only have ONE output (y value)

For example:

(2 ,4)

(2, 5)     This is not a function because the input has multiple outputs.

So your answer is the 1st option

i believe the answer is 68cm

step-by-step explanation:

i just took 34 x 2 because the space between v and y is the same as y to k.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,