exam Maths Puzzle Numerical Ability

write the equation of the line passing through each of thhe given pairs of points. write your results in slop-intercept form, where possible.
1. (-1,3) and (4,-2)

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exam Other Question

With a head wind, a plane traveled 1000 mi in 4 hours. With the same wind as a tail wind, the return trip took 3 hours and 20 minutes. Find the plane's air speed and wind speed. Write each expression in simplest form:

4r^2 - 25s^2
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2r^2 + 3rs - 20s^2

With this equation I am so lost and confused of how to even start the procedure! Is there any help out there for me? Thank you :-)