The initial flat rate that bike rental service charges is $19.70
The additonal charges per hour is $5.60.
Let x be the number of hour.
The equation formed is
[tex]19.70+5.60x=y[/tex]The y-intercept is determined by substituting x=0.
[tex]19.70+0=y[/tex]Hence the y -intercept is 19.70 dollar.