Question

Is y=10 + 2x proportional

Answer 1

Is not proportional

Explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form
`k=(y)/(x)` or
`y=kx`

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

In this problem we have

`y=10+2x`

This is the equation of a line in slope intercept form

where

`m=2\\b=10`

The y-intercept of the line is the point (0,10)

That means, that the line not passes through the origin

therefore

The given equation is not proportional