Write the ordered pairs from the table also is this a function why or why not

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Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.