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Find (a) the slope (if it is defined) of a line containing the two given points, (b) the equation ofthe line containing the two points in slope-intercept form, and (c) the ordered pair identifying the line's y-intercept, assuming that it exists. If appropriate, state whether the line is vertical or horizontal. a) Select the correct choice below and, if necessary, fill in the answer box to complete pur choice. C) A. The slope is . (Type an integer or a simplified fraction) C) B. The slope is undefined The line is b) Select the correct choice below and fill in the answer box to complete your choice. (Type an equation.) O A The slope is defined. The equation ofthe line in slope-intercept form is C) B. The slope is undefined The equation of the line is c) Select the correct choice below and, if necessary, fill in the answer box to complete pur choice. O A The y-intercept exists and its coordinates are _ (Type an ordered pair.) C) B. The y-intercept does not exist