exam Maths Puzzle Numerical Ability

how can you write
y = -2x in standar form and how would you graph it?

Thanks!

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exam Other Question

x-2/2-x+2/4=1/2
lcd=4 could you explain to me how to figure this out then check?
thank you! Consider polynomial g(x) = x^n + 4x; what is its maximum number of zeroes? @ The maximum number of zeroes = n, regardless of the value of n.
a. 0
b. 1
c. Cannot be determined without first knowing the value of n
d. None of the above