Respuesta :

Answer:

x = -4

Step-by-step explanation:

a vertical line is the x-coordinate in an ordered pair, while a horizontal line is the y-coordinate in an ordered pair

a useful mnemonic is VUX/HOY which stands for:

VUX:

Vertical line

Undefined slope

X: x coordinate

HOY:

Horizontal line

0 is the slope

Y: y coordinate