exam Maths Puzzle Numerical Ability

Could someone please help me find the equation of the parabola with the focus (-3,5) and the directrix y=8.

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exam Other Question

2x-3y=6
find the slope and the y-intercept for the equation
a. slope
b. y intercept The width of a rectangle is 9cm. shorter than its diagonal and 7cm. shorter than its length.How long is the diagonal?