7x + 1 Find the equation of the line tangent to the graph of y = at x=0. 3x - 1 O y = -3x-1 Oy = -4x-1 O y = -10x-1 Oy = -x-1Given the function f(x) =sin *(x) , when x=- the graph of f is 4 O Decreasing and concave down O Increasing and concave down O Decreasing and concave up O Increasing and concave up