What is the equation of the line of best fit that Frank drew? 
1 answer:
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Since this is a right triangle, you can use the pythagorean theorem, , to find XY. Since we know that 15 and 17 are our legs and that XY is the hypotenuse, we can solve it as such:
In short, XY is √514, or 22.67 rounded to the hundreths, units long.