UPSKILL MATH PLUS
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Learn more1. Show that the points are collinear: \((-3,-4)\), \((7,2)\) and \((12,5)\).
Answer:
Slope of \(AB =\) .
Slope of \(BC =\) .
Therefore, the given points are .
2. If the three points \((3,-1)\), \((a,3)\) and \((1,-3)\) are collinear, find the value of \(a\).
Answer:
The value of \(a =\) .
3. The line through the points \((-2,a)\) and \((9,3)\) has slope \(\frac{-1}{2}\). Find the value of \(a\).
Answer:
The value of \(a =\) .