Question

Find the slope of the line. (If an answer is undefined, enter UNDEFINED.)
−4x + 5y = 9

I did:
−4x + 5y = 9
5y = 4x+9
y=(4/5)x +(9/5)


when I Put (4/5)x +(9/5) on my online assignment, it said can not understand or grade it,
then I put 0.8x + 1.8 and it said incorrect answer.
what other answer do I put?

Answer 1

if they want the slope, just give them the slope, not the equation of the line!