exam Maths Puzzle Numerical Ability

Find the slope of the line through the given points.
(2,1) (2, 7)

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exam Other Question

could you help me with this equation? it is from a question we had in class.

The focus of (x-1)^2 = (y-2) is_____.

i said the answer is (-2,-1)
can you tell me if i got it right? thanks for any help.
Add.

5b to the 3rd power -8b + 2b to the 2nd power and
3b to the second power - 7b to the 3rd power + 5b