exam Maths Puzzle Numerical Ability

Find an equation in the form y=mx+b(where possible) for each line.
through (2,-1), parallel to 3x-y=1

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exam Other Question

If y = square root x+2 fill in the following table for x = 0, 1, 2, 3, 4. Round to three decimal places where necessary. I need to solve for y and graph please help question 1: 120% of y is 42. what is y
question 2: 300% of m is 600. waht is h
question 3: what percent is 54 of 60
question 4: what percent is 39 of 50