Trend lines can be used to make
predictions in real-world situations.
Three methods for making trend lines
are:
method (by hand)
• divide-center method (by hand)
regression (with
technology)

Find the quotient. 50a2 – 98b2 -5a +7b

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?