exam Maths Puzzle Numerical Ability

Find the equation of the line through the two points (5,3) and (-7,7).

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exam Other Question

Please find all appropriate critical points and graph (conic)
f(x)= x^2+x-2
Please show work
Thank You 1.)Solve the system.
4x + 3y = 11
3x - 2y= 4
x=? y=?

2.)Jennifer has collected $4.50 in nickels and dimes. If she has 55 coins, how many of each kind of coin does she have?