book Maths Puzzle Numerical Ability

Graph the following equation on a rectangular coordinate system: -x+y-1=0

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book Other Question

Please Help me with this equation:(4n-8m)(4n+8m) Make a line plot or bar graph of a set of data that fits the description

1. 24 names witha arange from 8 letters to 20 letters
2. 7 names,with a median length of 14 lengths