exam Maths Puzzle Numerical Ability

graph the following equation y= x + 1

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Can someone help me with this problem?

I need to add 3/8 + 5/8 in the lowest terms.

Thanks,
Sher
Which of the given subsets of R4 are subspaces:

a) [a b c d], where a = b = 0
b) [a b c d], where a = 1, b = 0, a + d = 1
c) [a b c d], where a > 0 and b < 0