exam Maths Puzzle Numerical Ability

please help me with this problem:
for the following inequality:x-y<-4
list three ordered pair solutions for the boundary of this inequality

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exam Other Question

write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form, where possible (-1,3 and (4, -2) Simplify completely: (s2/tu) * (5t3u/6s)