Brad has a stack of 7 books on his desk. Each book is 1 and 7/8 inches thick.How tall is the stack?
1 answer:
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Answer:
x = 0
Step-by-step explanation:
Given
x² = - 4y ( divide both sides by - 4 )
y = - x²
Which is a parabola opening vertically down with it's vertex at (0, 0) and symmetrical about the y- axis
Hence equation of axis of symmetry is x = 0