SOLUTION: find the slope and y intercept 2x+7y+8=0 I am using y=mx+b with this equation and it saying that my answer I came up is wrong what am I doing wrong..can someone help thanks

Algebra ->  Linear-equations -> SOLUTION: find the slope and y intercept 2x+7y+8=0 I am using y=mx+b with this equation and it saying that my answer I came up is wrong what am I doing wrong..can someone help thanks      Log On


   

Question 197709: find the slope and y intercept
2x+7y+8=0
I am using y=mx+b with this equation and it saying that my answer I came up is wrong
what am I doing wrong..can someone help
thanks
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
2x%2B7y%2B8=0 Start with the given equation.


2x%2B7y=-8 Subtract 8 from both sides.


7y=-8-2x Subtract 2x from both sides.


7y=-2x-8 Rearrange the terms.


y=%28-2x-8%29%2F%287%29 Divide both sides by 7 to isolate y.


y=%28%28-2%29%2F%287%29%29x%2B%28-8%29%2F%287%29 Break up the fraction.


y=-%282%2F7%29x-8%2F7 Reduce.


So the equation y=-%282%2F7%29x-8%2F7 is now in slope intercept form y=mx%2Bb where the slope is m=-2%2F7 and the y-intercept is b=-8%2F7


note: the y-intercept is the point