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1 answer:
Answer:
<h2><em><u>r</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>0</u></em><em><u>.</u></em><em><u>1</u></em></h2>Step-by-step explanation:
<em><u>Given</u></em><em><u>,</u></em>
y = rx
<em><u>Hence</u></em><em><u>,</u></em>
=> rx = y
<em>[</em><em>By</em><em> </em><em>putting</em><em> </em><em>the</em><em> </em><em>value</em><em> </em><em>of</em><em> </em><em>x</em><em> </em><em>and</em><em> </em><em>y</em><em>]</em>
=> <em><u>r = 0.1</u></em>
<em><u>Hence</u></em><em><u>,</u></em>
<em><u>The</u></em><em><u> </u></em><em><u>constant</u></em><em><u> </u></em><em><u>variation</u></em><em><u> </u></em><em><u>r</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>0</u></em><em><u>.</u></em><em><u>1</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em>
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A quadratic function's graph being wide or narrow is determined or depended on a-term:
If |a| has a lot of value, for example a = 2 or a = 100. The graph will get narrower if increasing the value of |a|. On the other hand, If |a| has small value, for example a = 1/2 or a = 1/10000. The graph would be wide.
Also it does not matter if a-term is negative or not since a-term being positive or negative determines if a parabola is upward or downward. Only |a| determines how narrow/wide the graph is.
From the question, it is clear that the parabola y = 2x^2 is the narrowest graph since it has the highest |a| value out of all choices.
Answer
- y = 2x^2