Which of the following functions are linear and which are proportional? (1) y = - 8x; (2) y = 8 / X; (3) y = 5x squared; (4) y = - 0.5x-1

Which of the following functions are linear and which are proportional? (1) y = - 8x; (2) y = 8 / X; (3) y = 5x squared; (4) y = - 0.5x-1

The first order functions are: (4)
The positive proportional functions are: (1)

In the following functions, y is a positive proportional function of X, 1. Y = 8x & # 178;; 2. Y = - π X / 2; 3. Y = 2 / x + 1; 4. Y=\
1.y=8x²；
2.y=（﹣πx）/2；
3.y=2/(x+1)；
4. Y = K & # 178 under the root sign; + 1 times x (k is a constant);
5.y=(x-1)/3;
6.3x+y=0

The answers are 1, 4, 5

In the following functions: (1) y = - 8x, (2) y = - 6 / x, (3) y = 8x + 1, which are positive proportional functions, are

Only one hour
2 is an inverse scale function
3 is a linear function

If the ratio of 8 / X is y, what is the ratio of X to y

xy=8
X and y are inversely proportional