My Math Forum Help find the gradient and the y-intercept

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 May 4th, 2015, 05:00 AM #1 Senior Member   Joined: Jan 2015 From: London Posts: 108 Thanks: 2 Help find the gradient and the y-intercept find the gradient and the y-intercept of this please y=4x-6 Thanks I don't know how to do it
 May 4th, 2015, 05:34 AM #2 Senior Member   Joined: Jan 2015 From: London Posts: 108 Thanks: 2 I figured out how to do it
May 5th, 2015, 01:56 AM   #3
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Quote:
 Originally Posted by jamesbrown I figured out how to do it
Good job!

 May 6th, 2015, 01:47 PM #4 Math Team   Joined: Jan 2015 From: Alabama Posts: 3,264 Thanks: 902 I would imagine any textbook that uses "y= ax+ b" as a standard form (the "slope-intercept" form) would also say that "a" is the gradient and "b" is the y-intercept.
May 6th, 2015, 06:49 PM   #5
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Quote:
 Originally Posted by Country Boy I would imagine any textbook that uses "y= ax+ b" as a standard form (the "slope-intercept" form) would also say that "a" is the gradient and "b" is the y-intercept.
Not quite. In my country, they do say that "a" is the gradient but never say that "b" is the y-intercept, making students waste their time substituting x = 0 to the equation.

May 6th, 2015, 08:18 PM   #6
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Quote:
 Originally Posted by Monox D. I-Fly Not quite. In my country, they do say that "a" is the gradient but never say that "b" is the y-intercept, making students waste their time substituting x = 0 to the equation.
Which country do you belong to?

Last edited by skipjack; May 6th, 2015 at 10:08 PM.

 May 7th, 2015, 05:12 AM #7 Math Team   Joined: Jan 2015 From: Alabama Posts: 3,264 Thanks: 902 Surely it doesn't waste a great deal of time to multiply by 0! And after the first time doing that, you would know the y-intercept of y= ax+ b is b. All your country is doing is helping the students discover it for themselves. Thanks from Monox D. I-Fly
May 7th, 2015, 07:19 PM   #8
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Quote:
 Originally Posted by ishaanmj007 Which country do you belong to?
Indonesia.

Quote:
 Originally Posted by Country Boy Surely it doesn't waste a great deal of time to multiply by 0! And after the first time doing that, you would know the y-intercept of y= ax+ b is b. All your country is doing is helping the students discover it for themselves.
Well, actually I'm glad they didn't spoil the students by just doing that.

Last edited by Monox D. I-Fly; May 7th, 2015 at 07:22 PM.

### my maths gradients and intercepts help

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