exam Maths Puzzle Numerical Ability

I just really dont understand math at all im having trouble in my algebra2 class with point slope heres a problem can u solve it for me [3,2] [-4,3]

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exam Other Question

Seven men agree with eighth man to subscribe a sum of money to a fund. The first seven are to subscribe Rs.50 each and the eighth man Rs. 70 more than the average of all the eight. Find how much did the eighth man subscribe? Simplify:

5 sq root 2(7 sq root 8 + 5 sq root 3)