exam Maths Puzzle Numerical Ability

How do you write the point-slope form of an equation for a line that passes through each point with the given slope?

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exam Other Question

If I increase my usual driving speed by 10 km/h, I can drive the 255 km trip to Nashville in 24 min less than usual. How fast do I usually drive? How would I solve for x?
4kx-7y=kx
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k