Which statement is always true?
a. a linear relationship is proportional.
b. a linear relationship is non-proportional.
c. a proportional relationship contains the point ( 0 , 0 ) .
d. a non-proportional relationship has a constant rate of change.

A

Step-by-step explanation:

When we say proportional, we basically mean two quantities are based on a multiplicative constant. For example:

1:2 is proportional to 5:10, because if we reduce 5:10, we get 1:2.

Also, in terms of coordinate geometry, we can say line

y = ax

and

y = bx

are proportional if a:b = constant always.

We say that is a linear line. Linear relationship.

Now, looking at the answer choices, we can eliminate B and C [Choice C is easily eliminated because point (x,y) doesn't matter]. Also, we ccan eliminate D because this is just the opposite.

So answer choice A holds true.

A is right.

the answer is mc^1-1jpeg