Find a the slope if it is defined of a line containing the two given points,(b the equation of the 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 [7. -3] and [-3.-13] a) Select the correct choice below and,if necessary,fill in the answer box to complete your choice OA.The slope isType an integer or a simplified fraction. OB.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.) OA. The slope is defined. The equation of the line in slope-intercept form is OB.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 your choice A.The y-intercept exists and its coordinates are (Type an ordered pair,using integers or fractions.Simplify your answer. OB.The y-intercept does not exist.