2x=18 y if y=kx where is the constant of prooortionality then what is the value of k?
To find the value of k, we need to use the equation y = kx and the given equation 2x = 18.
First, let's solve the equation 2x = 18 for x. Divide both sides of the equation by 2:
2x/2 = 18/2
x = 9
Now that we have the value of x, we can substitute it back into the equation y = kx. Since y = 18 (as given in the problem), we have:
18 = k * 9
To isolate k, divide both sides of the equation by 9:
18/9 = k * 9/9
2 = k
Therefore, the value of k is 2.