The function y = (2k + 6) x-k is a first-order function of X, and Y decreases with the increase of X. the value range of K is obtained and the quadrants are pointed out

The function y = (2k + 6) x-k is a first-order function of X, and Y decreases with the increase of X. the value range of K is obtained and the quadrants are pointed out

Y = (2k + 6) x-k is a linear function of X, and Y decreases with the increase of X
2k+6

It is known that the inverse proportional function y = - 2k-5 of X. when x ＜ 0, the value of function y decreases with the increase of X, then the value range of K?
It is known that y + 3 is inversely proportional to 3x, and when x = 1, y = - 1, then the scaling coefficient k =? The area of a triangle is known to be 8. Then the analytic expression of the function between one of its sides y and the high x on this side is? Domain of definition?

It is known that the inverse proportional function y = - 2k-5 of X. when x < 0, the value of function y decreases with the increase of X
2k-5>0
k>5/2
It is known that y + 3 is inversely proportional to 3x, and when x = 1, y = - 1
Let y + 3 = K / (3x)
X = 1, y = - 1
2=k/3
k=6
It is known that the area of a triangle is equal to 8. Then the analytic expression of the function between one of its sides y and the height x on this side is "domain of definition"?
xy/2=8
y=12/x
Domain: x > 0