Question

What is a proportional relationship? What does a graph look like if there is a proportional relationship?



Please Explain EVERTHING

Answer 1

@UnkleRhaukus

Answer 2

@dan815

Answer 3

@thomaster

Answer 4

@rational

Answer 5

@mathmath333

Answer 6

paquio

Answer 7

\(y\) is proportional to \(x\)
\[y(x)\propto x\]
implies for some constant \(k\) number
\[y(x)=kx\]


ie
a straight line through the origin
\[y(x)=mx+b\]
where the slope; \(m\), is equal to the constant; \(k\)
and the \(y\)-intercept; \(b\), is zero