exam Maths Puzzle Numerical Ability

how do you draw an acute scalene triangle NDK and construct a segment from c perpendicular to ND

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exam Other Question

Please help to graph the inequality

x <-3
y is -4
slope is -2

thanks right now were doing matrices and i was wondering if i got the answer right the problem is
and this is the answer i got:
[1 2 3] [ 0 -1 2