exam Maths Puzzle Numerical Ability

This is from a worksheet. I cannot figure this one out at all.

y^3+5y^2-9y-45
The instructions are to factor completely.

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exam Other Question

Any help is appreciated.

Rewrite
6sqrt19 Find the slope and the y-intercept of the line whose equation is -3x + y = -5.

Find an equation of the line through the given points. Write the equation in standard form.

Through (6,2) and (8,8).