How do you find if the relationship in a table is a function

Write 42,63 as product of their prime factors

Given the relations A: (3,2), (5,3), (6,2), (7,4) which statement is true? Both A and A^-1 are functions Neither A nor A^-1 is a function Only A is a function Only A^-1 is a function

9/10 divided by (-3/5)

Yolanda is buying supplies for school. she buys n packages of pencils at $1.40 and m pads of paper at 1.20 each. what does each term in the expression 1.4n 1.2m represent? what does the entire expression represent?

Represent the following algebraically. A number, x, decreased by the sum of 2x and 5

You buy 100 shares of a company stock at $9.75 per share and place the same amount in a savings account earning 4.5% APR. The stock gained 8% in the first year.

If f (x) = x2 + 7, what is the equation for f-1 (x) ?

What is the equation of this function after it is reflected over the x-axis? O A. F (X) = (y + 4) 3 O B. F (x) = y (x + 4) 3 O C. F (x) = - (x + 4) 3 O D. F (X) = - (y + 4) 3

What adds to be the bottom number but also multiplies to be the top? 36, 12

Olivia has a piece of ribbon 1/2 yard long. If she cuts it into 6 equal pieces, what will be the length of each piece, in yards?