Mathematics: Find an equation of the line perpendicular to the graph of 14x-7y=1 that passes through the point at (-2,4) a. y= 2x+3 b. y=(1/2)x+3 c. y= -(1/2)-3 d. y= -(1/2)+3

Find an equation of the line perpendicular to the

Ответ:

quan91

14.03.2022

To solve first this needs to be in the general form of
$y = a {x}^{2} + b$
so we do the following
$14x - 7y = 1 \\ - 7y = - 14x + 1\\ y = 2x - \frac{1}{7}$
perpendicular lines have slopes that are the negative inverse of one another as such the slope of the line that is perpedicular to this one will have
$slope = \frac{ - 1}{2}$
to determine if it passes through the desire point we use
$y = - \frac{1}{2}x + b \\ 4 = - \frac{1}{2} \times( - 2) + b \\ 4 = 1 + b \\ 3 = b$
so we have the final following equation as the answer
$y = - \frac{1}{2}x + 3$