exam Maths Puzzle Numerical Ability

I have a couple more problems today I need steps and solutions for if anyone would be so kind.

Solve each equation using zero factor property.



2w(4w + 1) = 1

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exam Other Question
how do i turn -5, 4, and 6 into polynomial funtions with rational coeffients in standard form? Can anyone help with this?

A line passes through the point (-4,-9) and has a slope of -3 . Write an equation for this line in x,y -coordinates.