confusing graphs

• Oct 23rd 2006, 09:34 AM
kimdragon
confusing graphs
first, about me. i am using oddeseyware for school, a division of switched on schoolhouse. this means that i am doing problems on a computer, and the computer grades them. sometimes its a bit finicky about the answers it will take, but i've learned to accomodate it.

so i have this problem. i am asked to find the slope and y intercept of a linear equation in standard form. easy enough right? so i get to work.

5x + 6y = 24
i decide to just change it to y = mx+b because thats easiest.
6y = 5x + 24
y = 5/6x + 4
i assume that 5/6 is the slope and 4 is the y-intecept, but i am told that this answer is wrong. why?

i seem to have several other problems like this. is it just my math? or something else?

EDIT: oh geez, i just found my error. in step two 5x should have been negative... well, thanx for having the patience to read a completely pointless thread.
• Nov 2nd 2006, 11:41 AM
Neutrino
5x+6y = 24

6y = -5x+24

y = (-5/6)x+4

slope: -5/6
y-intercept: 4