Problem 1.9. Find the relative ertrema of the following function. Determine whether each
1 answer:
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Use pythagorean theorem: 6^2+b^2=10^2; 36+b^2+=100; b^2=64; 
; b=8cm=EF
Given:
The vertices of a triangle are R(3, 7), S(-5, -2), and T(3, -5).
To find:
The vertices of the triangle after a reflection over x = -3 and plot the triangle and its image on the graph.
Solution:
If a figure reflected across the line x=a, then
The triangle after a reflection over x = -3. So, the rule of reflection is
The vertices of triangle after reflection are
Similarly,
And,
Therefore, the vertices of triangle after reflection over x=-3 are R'(-9,7), S'(-1,-2) and T'(-3,-5).
