exam Maths Puzzle Numerical Ability

Consider the line y= -1/4x+4

What is the slope of a line parallel to this line?
What is the slope of a line perpendicular to this line?

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exam Other Question

The length of one leg of a right triangle is 1 in. more than the other. If the length of the hypotenuse is 3 in., what are the lengths of the legs? round to the nearest thousandth of an inch. Multiply

(c+1/3)(c+1/2)
Thank you