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September 16, 2014

September 16, 2014

Posted by **ann** on Friday, January 20, 2012 at 9:24pm.

given equation point slope form linear equation to use to do question. y-3 = 3(x+1)

question rewrite this equation in standard form

y- 3 + 3 = 3x - 3x +3 + 3

-3x+ y = 6 collect all variables on one side and constants on other for standard form.

next question said, what is the x intercept of this line? would it be talking about -1 from original equation or -3x + y = 6

-3x = y(0) = 6

x = -2 x inter is -2

thanks for your help. ann

- algebra -
**Reiny**, Friday, January 20, 2012 at 11:03pm-3x + y = 6 is correct, but we usually start with a positive x term, so

3x - y = -6

for the x-intercept, let y = 0 , (you are on the x-axis)

3x - 0 = -6

x = -2

the x-intercept is -2

yes, you were right.

- algebra -
**ann**, Saturday, January 21, 2012 at 3:42pmReiny, thank you very much for your help. ann

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