Tell whether the equation represents a direct variation. If so identify the constant of variation.

y = 2x - 9

Question

Tell whether the equation represents a direct variation. If so identify the constant of variation.

y = 2x - 9

saifoo.khan · Answer

2 i think..

anonymous · Answer

2 = m, which is the variable i think

saifoo.khan · Answer

wait. 2 is not the variable. it's a co-efficent.

anonymous · Answer

the constant

anonymous · Answer

well by varaible i meant constant i guess, it's the slope to which y and x will vary to each other.

i dont think the y-intercept will have any effect on the matter..

anonymous · Answer

i think im wrong actually, because with direct variation it always has to go through the point (0,0) so the y-intercept is actually KEY to the whole matter lol

anonymous · Answer

direct variation means y=kx
in your question it isn't

anonymous · Answer

http://www.freemathhelp.com/direct-variation.html

anonymous · Answer

no not direct because of the -9