contestada

Which pair of equations when graphed has lines that are perpendicular?

A. Y= 2x- 7
X+ 3y= 3
B. 2y= -3x+ 5
2x- 3y= 4
C. 5x- 8y= 9
12x- 5y= 7
D. 3X+ 6Y= 8
Y= 3x- 8

Respuesta :

zohotmail
option B 
 when rearranged the two equations are;

y= -3/2x +5/2 and y= 2/3x + 4 

they are perpendicular as the gradient are opposite each other -3/2 is the negative and flipped version of 2/3 

Otras preguntas