Urbium (Ur) is an upscale element found in big cities. Its oxide (UrO2) is not very stable and decomposes readily at temperatures exceeding 66∘ C. The figure below shows how the rate of reaction varies with the concentration of UrO2 at 75∘ C.

The rate r is in units of M⋅s−1 and the concentration c of UrO2 is in units of M (mole⋅L−1). The slope has a value of 1.34 and the intercept has a value of 1.51. What is the order of reaction for the decomposition of urbium oxide?