please answer and show work

Find k such that the line is tangent to the graph of the given function, f(x) 15. Function Line 16. Function Line f(x) = kx y =-2x +3 f ( x ) = kvx y = x+4 Who's Right / Who's Wrong? 17. Two students, Sasha and Reginald, are asked to write the equation of the tangent line to the function f(x) =3x2 - x at the point (2, 10). Their work is shown below. Sasha Reginald f' ( x ) = 4x - 1 . Find the c f' ( x ) = 6 x - 1 whe slope is (X - 1 f'(2 ) = 6(2 ) - 1 = 11 4-10= (4X-1) (x- 2) slope is 11 mil Cal y- 10= 11 ( x- 2 ) Which student's solution is correct? What was the error or misconception from the other student's solution