please help solve 34 and 35

Name: Period: graph f' ( 1 ) = 1 34.Let f be a differentiable function. The figure above shows the graph of the line tangent to the graph of f at x =1. Of the following, which must be true? Yr (1) =1(1) (B) f' (1) =-f(1) (of (1) f(1) 35. On what interval(s) is the function f concave down and decreasing, given the derivative of f is f'(x) = 3x2+17x -6p (A)(-6,-17/6 (B (-17/6. 1/3) (0) (-17/6, 00) (1)) (-6.1/3)