SOLUTION: I am lost. can you help me. Rewrite the equation 2x – 9y = –72 as a function of x Thanks

Algebra ->  Graphs -> SOLUTION: I am lost. can you help me. Rewrite the equation 2x – 9y = –72 as a function of x Thanks      Log On


   

Question 109133: I am lost. can you help me.
Rewrite the equation 2x – 9y = –72 as a function of x
Thanks
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Solved by pluggable solver: Converting Linear Equations in Standard form to Slope-Intercept Form (and vice versa)
Convert from standard form (Ax+By = C) to slope-intercept form (y = mx+b)


2x-9y=-72 Start with the given equation


2x-9y-2x=-72-2x Subtract 2x from both sides


-9y=-2x-72 Simplify


%28-9y%29%2F%28-9%29=%28-2x-72%29%2F%28-9%29 Divide both sides by -9 to isolate y


y+=+%28-2x%29%2F%28-9%29%2B%28-72%29%2F%28-9%29 Break up the fraction on the right hand side


y+=+%282%2F9%29x%2B8 Reduce and simplify


The original equation 2x-9y=-72 (standard form) is equivalent to y+=+%282%2F9%29x%2B8 (slope-intercept form)


The equation y+=+%282%2F9%29x%2B8 is in the form y=mx%2Bb where m=2%2F9 is the slope and b=8 is the y intercept.