Pythagorean theorem to find the length of the hypotenuse in the triangle 16 30

Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9

Pranza plotted point a in the coordinate plane below.

What is the point slope form of a line with slope -5 that contains point (2,-1)