Respuesta :
if you are writing it in the form y = mx + c
then you know that c it the y-intercept m the gardient
if you know the gradient of the peropendicular line then reciprocate that gradient and multiply it by - 1 to get the gradient.
e.g. gradient of perpen. = 2 and y intercept = 9
then gradient of line = - [tex] \frac{1}{2} [/tex]
Thus equation would be y = - [tex] \frac{1}{2} [/tex] x + 9
then you know that c it the y-intercept m the gardient
if you know the gradient of the peropendicular line then reciprocate that gradient and multiply it by - 1 to get the gradient.
e.g. gradient of perpen. = 2 and y intercept = 9
then gradient of line = - [tex] \frac{1}{2} [/tex]
Thus equation would be y = - [tex] \frac{1}{2} [/tex] x + 9
For a perpendicular line, you use the negative reciprocal. Meaning if you wanted the perpendicular slope of 5/3 you would get -3/5. And the y-intercept is you last portion. Say your equation to a perpendicular line is y=-3/4x-7 and your y-intercept is 5 then your other equation would be y=4/3x+5.