Question

1. which can be used to find the constant of proportionality?

kx
x ÷ y
y ÷ x
y=x

1. which equation represents a proportional relationship?

k=y/x
y=kx
k=x

Explanation:

Step1: Recall proportionality definition

A proportional relationship is defined as $y = kx$, where $k$ is the constant of proportionality.

Step2: Solve Q9: Isolate $k$

Rearrange $y = kx$ to solve for $k$: $k = \frac{y}{x}$, which is equivalent to $y \div x$.

Step3: Solve Q10: Identify proportional form

The standard equation for a proportional relationship is $y = kx$, where $k$ is the constant of proportionality.

Answer:

1. $\boldsymbol{y \div x}$
2. $\boldsymbol{y=kx}$