Two Quantities X and Y Show a Power Curve Relation $y= 1.3 x^{-2.9}$

Multiple Choice

Two quantities x and y show a power curve relation $y= 1.3 x^{-2.9}$ . Using base-10 logarithmic scales for both x and y axes, the curve is transformed to a line. Find the slope of the line.

A) 1.3
B) 0.11
C) -2.9
D) 2.9