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Mathematics 8 Online
OpenStudy (anonymous):

thanks:)

OpenStudy (matt101):

The general form for a point slope equation is y=mx+b, where m is the slope and b is a constant (and the y-intercept). The question gives you values for x, y, and m. Plug these in to solve for b. The equation for the line would then be y=mx+b, but with m and b replaced with the specific values you have here!

Directrix (directrix):

The point-slope form of a line with slope m and passing through a given point is the following: y - y1 = m*(x - x1) where (x1, y1) is the point through which the line passes and m is the slope of the line. http://www.purplemath.com/modules/strtlneq2.htm

Directrix (directrix):

(-1, 1) is the point P and -1 is the slope in this problem y - y1 = m*(x - x1) y - 1 = -1* (x - (-1) ) y - 1 = -1 ( x + 1) is the equation of the line in point-slope form >>write an point slope equation for line

Directrix (directrix):

In y = mx +b form, that becomes y = -x + 0. However, the instructions indicated that the equation is to be left in point-slope form.

OpenStudy (anonymous):

i think your right tho:)

Directrix (directrix):

Several days ago, I helped an Asker with a similar problem. There were options, all of the form akin to this: y - 1 = -1 ( x + 1)

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