Hola tengo una pregunta ¿cómo se hace la grafíca y=4 pero en forma electrónica? ya que los trabajos de matemáticas ya se están haciendo desde la internet.

answer: y=4 is a 0 slope so put a point on (0,4) and then just make the line horizontal. there is no slope.

idk

step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.