exam Maths Puzzle Numerical Ability

Do you mind checking two more please?

1) -3x + y = -4
x - y = 0
I got y = 2, x = 2 (2,2)

2) 2x - y = -6
-2x + 2y = 4
I got y = -2, x = -4 (-2, -4)

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exam Other Question

Let R(x)=x^3-7/x^2+1; what happens to R(x) if we now have R(x+2)?
a)It shifts 2 units to the left
b)It shifts 2 units up
c)It shiftes 2 units to the right
d)It remains stationary; there is no effect of adding 2 to x If it takes 7 cups of flour to make 4 loaves of bread, how many loaves of bread can you make with 35 cups of flour?