exam Maths Puzzle Numerical Ability

How do I solve this problem?

y = -(x - 3)^2 - 1

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exam Other Question

please help
find an equation for the line that contains the point (3,5) and has slope m=-4.
Express the equation in slope-intercept form. help me someone please!!

The length of a rectangle is 1 cm longer than its width. If the diagonal
of the rectangle is 4 cm, what are the dimensions (the length and the width) of the rectangle?