Check whether the given function is in the form of y=kx or can be written in the form of y=kx.
Is x and y proportional? Yes. Constant of Proportionality: 1 Explanation: The equation can be written as y=kx.
Practice makes perfect
We want to determine if x and y are proportional.
x-y=0
Since the given function is not in the form of y= kx, let's try to rewrite it in this form by isolating y.
Now, recall that multiplying by 1 does not change the value of an expression. Therefore, we can write x as 1* x.
y=x ⇒ y = 1* x
We can write the equation in the form y= kx. This means that x and y are proportional. We can also identify the constant of proportionality k.
y= 1 * x
The constant of proportionality is 1.
