If a twice differentiable function has the properties that f''(b) < 0 and f'(b) = 0 then at x = b the graph of y = f(x) has a(n) a) relative maximum
b) relative minimum
c) inflection point
d) horizontal tangent that is not an extrema
e) cusp or corner

the answers c

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation: