Help me answer this question please (use full working)
1 answer:
Step-by-step explanation:
The above variation is written as
y = kx²
where k is the constant of variation
when y = 20 and x = 1
we have
20 = k(1)²
k = 20
So the formula for the variation is
y = 20x²
<h2>a). </h2>
when x is doubled that's x = 2
y = 20(2)²
y = 20(4)
<h3>y = 80</h3>
<h2>b).</h2>
when y = 80
We have
80 = 20x
Divide both sides by 20
<h3>x = 4</h3>
Hope this helps you
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