exam Maths Puzzle Numerical Ability

Can someone help me please?
Express the interval in set-builder notation and graph the interval on a number line.

[-∞,5/3]

If you can not graph that is ok. Thanks

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exam Other Question

please please help

(-1,-5),-8 find the equation of the line that goes through the given point and has the given slope. write the answer in slope intercept form.
If you were to solve x^2 - 5x = 6 by factoring, which step would result?

I got:
(x+6)(x-1)=0

Thanks~