If a is an even positive integer and b is an odd positive integer, then which of the following expressions will not be an integer?

Plz which expression is equivalent to the expression below?

What is the point-slope form of the equation for the line with a slope of -2 that passes through (1,4)?

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