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May 5th, 2015, 08:44 AM  #1 
Senior Member Joined: Jan 2015 From: London Posts: 108 Thanks: 2  Y intercept and gradient
3x=15+6y goes to 6y=153x then y= 153x/6 I don't know can someone help please 
May 5th, 2015, 09:40 AM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 520 Math Focus: Calculus/ODEs 
We are given the line: $\displaystyle 3x=15+6y$ The easiest way I know of the get the slope (gradient) and $y$intercept at the same time is to write the line in slopeintercept form $y=mx+b$: $\displaystyle y=\frac{1}{2}x\frac{5}{2}$ Now it is easy to see that the $y$intercept is at the point: $\displaystyle (0,b)=\left(0,\frac{5}{2}\right)$ and the slope is: $\displaystyle m=\frac{1}{2}$ 

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gradient, intercept 
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