Question

how would i write out this problem for which of these equations is y a function of x
a. y=3x to the 3rd power b.xy=1 c.yto 2 nd power d. y to 3rd power=8x

Answer 1

I not sure you write, I think
a) y= (3x)^3

Answer 2

yes thats how its written but is y a function of x how do i determine that

Answer 3

you want find x and y intercept?

Answer 4

yeah

Answer 5

ok: you plug x=0 find y
plug y=0 find x

Answer 6

Example: find y plug x=0
a) y= (3x)^3
y= (3*0)^3
y= 0
find x: plug y= 0
0 = (3x)^3
0 = 27(x)^3
0/27=x^3
x=0
(0,0)

Answer 7

so is this equation y a function of x