Question

Which is NOT true about a direct proportion?

A. Its graph must go through the origin.
B. Its graph must be linear.
C. Its graph must have a slope of 1.
D. Its graph must have a constant slope.

Answer 1

Explanation:

Answer 2

Answer is

C. Its graph must have a slope of 1.

Because the formula of direct proportion is

y=kx,

where is k is a number( constant), but it does not have to be equal 1.