exam Maths Puzzle Numerical Ability

Graph the following linear equation:

y=-2x-1


Any help with this one would be great. Thank you so much.

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exam Other Question
Factor:


x^2+6x-16
 Sixty boxes which each measure 10cm.long 3cmwide and 8cm tall are to be stored How much space is required to store the 60 boxes?

2(10cm)+2(3cm)+2(8cm)
20cm+6cm +12cm=38cm= 1 b