exam Maths Puzzle Numerical Ability

I am trying to put the points (-7,2) and (-1,7) in general form.

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exam Other Question

this one is a pain and I need help!

x^2+8=57

its one of these

a +-square root 65

b +-square root 57-8

c +-square root 7

d +-square root 57+8
Given rstu is a parallelagram, su is the median to rt
Prove: angle str is congruent to angle utr