Question #164f8

Question

Question #164f8

1 Answer

Impact of this question

1474 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-04-09T14:54:01

$\frac{1}{3}$ $1/3$

Explanation:

The equation isn't in an easy line form, so you'll have to change it round,

$3 x + y = 8$ $3x + y = 8$
$y = 8 - 3 x$ $y = 8 - 3x$
$y = - 3 x + 8$ $y = -3x + 8$ .

This now resembles $y = m x + c$ $y = mx + c$ , where $m$ $m$ is the slope or gradient. We can read off from the equation that the slope is $- 3$ $-3$ .

However, if it is the slope of a line perpendicular to this that is being asked for, then the slope is

$- m^{- 1}$ $-m^-1$ .

When $m = - 3$ $m = -3$ , as in the question, then

$- {(- 3)}^{- 1} = - \frac{1}{- 3} = \frac{1}{3}$ $-(-3)^-1 = -1/(-3) = 1/3$

Science

Math

Humanities

... and beyond

Question #164f8

1 Answer

Explanation:

Related questions

Impact of this question