exam Maths Puzzle Numerical Ability

Can someone please help me solve this problem.
Find the slope of the line passing through the points (4,-4) and (-2,1).

Thank you.

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exam Other Question

Francesca traveled for 5h in her car at a constant speed of 90km/h and then traveled in a bus at a constant speed for 3 h. If the total distance she traveled was 795 km, what was the speed of the bus? Solve:(7x-1)^(1/3)= 3, solve for x