Fared wants to enrol in a gym. He has two options, gym A that charges AED 50 as a start-up fee and AED 150 per month and gym B t
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Answer:
f(x) = > f(x) = -0.5x² > f(x) = x²
Step-by-step explanation:
In a quadratic function leading coefficient decides the width of a graph.
In simpler words, leading coefficient decides the vertical stretch of the graph.
Higher the value of leading coefficient, higher the vertical stretch.
When a graph is vertically stretched it becomes narrower.
(Note: Minus sign of the coefficient decides the opening of the graph, upwards or downwards)
Therefore, f(x) = x² having coefficient = 1 is the narrowest and f(x) = will be the widest.
So the descending order will be,
f(x) = > f(x) = -0.5x² > f(x) = x²
I usually used formula
f(x)=a(x+b/2a)^2+c-b/4
f(x)=a(x+b/2a)^2+c-b/4