Answer:
The y intercept is 3
Step-by-step explanation: The y interception ocurrs when X=0,so in the x,y pais you have (0,3), indicating that when X=0, Y=3. Also, according to the information, the linear equation would be: y=mx+b being m=slope and b the interception of the y axis, so the equation would be: y =-3x+3.