How can you write an equation for the lines satisfying these conditions:

Passing through the point (0,4) and having a slope of 3??

Please explain to me and show all work!(Nerd)

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- Dec 14th 2010, 01:42 PMJohnathon324Writing Linear Equations?
How can you write an equation for the lines satisfying these conditions:

Passing through the point (0,4) and having a slope of 3??

Please explain to me and show all work!(Nerd) - Dec 14th 2010, 01:46 PMpickslides
Well the equation of a line is y=mx+c

Where m is the gradient (slope) and c is the y-intercept.

you are told what m is. Subtitute this into the equation, you get y=3x+c.

Finally sustitute in the (x,y) = (0,4) into y=3x+c to solve for c, then you are finished. - Dec 14th 2010, 02:54 PMjgv115
Or you can use the one point formula:

$\displaystyle y - y_{1} = m(x-x_{1}) $