Question

Given that y is directly proportional to the square of x, copy and complete the table below: x: 2, 3, 5,?, ?
y:?,81,?, 441,56.25​

Answer 1

Answer:

Step-by-step explanation:

f(x)=kx−−√f(2x)=k2x−−√=kx−−√⋅2–√f(x2)=kx2−−√=kx−−√2–√

If x is doubled, y increases by a factor of  2–√.

If x is halved, y decreases by a factor of  2–√