exam Maths Puzzle Numerical Ability

Please help. I am not good with fractions and adding this other stuff makes it even harder.
Complete the ordered pairs for the equation y = 2x + 4.

( ,0), (1/2, ), (0, ), (-1/2, )

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exam Other Question
I am having trouble with my homework sheets on matrices. Could someone please help with these.
Write the matrix equation as a system of equations and solve the system.
3.) [1 2 3 6*5+2-24 divded by 4*2