If y=xy+x^2+1 then when x=-1, dy/dx is?

Consider the functions below. function 1 function 2 function 3 select the statement which is true about the functions over the interval [1, 2] a b function 3 has the highest average rate of change function 2 and function 3 have the same average rate of change. function and function 3 have the same average rate of change function 2 has the lowest average rate of change d.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)