m= - /

Question

0

555

3

m= ${{\mathtt{y}}}^{{\mathtt{2}}}$ - ${{\mathtt{y}}}^{{\mathtt{2}}}$ / ${{\mathtt{x}}}^{{\mathtt{2}}}{\mathtt{\,-\,}}{{\mathtt{x}}}^{{\mathtt{2}}}$

m= -7 - (-1) / -7 -14

m= -6 / -21

m= 2/7

Guest Oct 31, 2014

geno3141 · Answer 1 · 2014-10-31T05:41:40

The clarification that I would make is that the slope of a line is not found by using exponents: rather,

m = (y2 - y1) / (x2 - x1) = (-7 - -1) / (-7 - 14) = -6 / -21 = 2/7.

So, I agree with your calculations, just not how the formula was stated.

To find the equation of the line, use the point-slope form: y - y1 = m(x - x1)

---> y - -1 = (2/7)(x - 14) ---> y + 1 + (2/7)(x - 14)

---> 7y + 7 = 2(x - 14) ---> 7y + 7 = 2x - 28 ---> -2x + 7y = -35 ---> 2x - 7y = 35

Guest · Answer 2 · 2014-10-31T05:48:08

Oops! Thanks. I'm still a little confused as to what the answer turned out to be. Is it 2x - 7=35 ?

geno3141 · Answer 3 · 2014-10-31T05:53:31

The equation of the line is: 2x - 7y = 35.