Determine the slope and y-intercept of an equation in slope-intercept form. Which linear equation would produce a y-intercept of left parenthesis 0 comma 9 right parenthesis and a slope of short dash 3? a.) y equals short dash 9 x plus 3 b.) y equals 9 x minus 3 c.) y equals short dash 3 x plus 9 d.) y equals 3 x minus 9