exam
Maths Puzzle
Numerical Ability
A straight line passes through the point (4,3) and is perpendicular to the line joining the points (-1,3) and (1,-1). Find the equation of this line.
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exam Other Question
In 1920, the record for a certain race was 45.4 sec In 1970, it was 44.9 sec. Let R(t)=the record in the reace and t=the number of years since 1920.
a) Find a linear function t
(-6x(squared)+14x)-(-3x(squared)+5x)