If y is directly proportional to x² and y=2 when x=3 Find the value of y when x=6
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y = 8

Step-by-step explanation:

Given that y is directly proportional to x² then the equation relating them is

y = kx² ← k is the constant of variation

To find k use the condition y = 2 when x = 3, then

2 = k × 3² = 9k ( divide both sides by 9 )

= k

y = x² ← equation of proportion

When x = 6, then

y = × 6² = × 36 = 2 × 4 = 8

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: