book Maths Puzzle Numerical Ability

Write the equation of the line with slope 4 and y-intercept (0,5).

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book Other Question

If P is the midpoint of segment AB, find the coordinates of the missing point

P(1.2, 4.5) B(5.3, 1.9) I cannot figure this one out. Can you please help me? Thanks Please help me rationalize the expression 2sqrt3+sqrt2/sqrt3-sqrt2 so there are no radicals in the denominator. I came up with 4-sqrt6
Thanks a lot