exam Maths Puzzle Numerical Ability

A line passing through (4, 20) and (6, y) is parallel to a line with slope -7. What is the value of y?

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exam Other Question

divide and simplify
[sq.rt. of (72x^2)] / [sq.rt of 2x]
Write the equation of the line passing through the given point with the indicated slope. Give your results in slope-intercept form, where possible.

(0, 5), m = - 3/5 (3 over 5 in fraction form)

Thank you.