exam Maths Puzzle Numerical Ability

which one passes through the point (0,2)?
y=3x+1
y=7x=2
y=2x+3
y=9x+8

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exam Other Question

Prove the following statement:

If a triangle has one obtuse angle, then the other two angles are acute.
Find the values for which 2y-6 over 2y square +5y+2 is undefined