Given the conic section r=18+8cos⁡(θ)\displaystyle {r}=\frac{{1}}{{{8}+{8}{\cos{{\left(\theta\right)}}}}}, find the x and y intercept(s) and the focus(foci).

Intercept(s):  

Focus(foci):  

Give answers as a list of one or more ordered pairs, separated by commas.

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