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 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.

sum= when you add is how much the whole amount is

distance= when you use angles and it means how far it goes

step-by-step explanation:

i can't see the picture : /