Mathematics for IGCSE & O level - Sketching Curves (Section 2 - No. 20)
What is true about the graph of y = -2x² - 4x + 1? (Select all that apply)
It opens downwards
It is symmetrical
It has a minimum point
The x-intercept can be calculated
Explanation
The negative coefficient indicates it opens downward. It is symmetrical. We can solve the quadratic to find the x-intercepts.
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