Respuesta :
y=mx+b
-7=3(-1)+ b
-7= -3+b
move -3 over to the left side by adding it to -7
-4= b
the y intercept would be -4
-7=3(-1)+ b
-7= -3+b
move -3 over to the left side by adding it to -7
-4= b
the y intercept would be -4