Find the equation of a line that passes through (1,9) and is parallel to the graph of y=3x+4. Write the equation in slope-intercept form, if possible. Select the correct choice below and fill in the answer box to complete your choice. The equation of the parallel line in slope-intercept form is
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 (Simplify your answer. Type your answer in slope-intercept form. Use integers or fractions for any numbers in the equation.)
 B.
 The equation of the parallel line cannot be written in slope-intercept form. The equation of the parallel line is 
 enter your response here.
 (Simplify your answer. Use integers or fractions for any numbers in the equation.)