 
Arturo O. answered  11/26/19
Tutor
                    
        5.0
        (66)
            Experienced Physics Teacher for Physics Tutoring
It crosses the y-axis at the point (0,b). To get b, set x=0 in the equation and solve for y. The resulting value of y is b. You should get (0,4).
 
     
             
                     
                    