C-11-Q086mediumsingle_mcqThe equation of a straight line through (x1,y1)(x_1, y_1)(x1,y1) with slope mmm is —ay−y1=m(x−x1)y-y_1=m(x-x_1)y−y1=m(x−x1)by=mxy=mxy=mxcy+y1=m(x+x1)y+y_1=m(x+x_1)y+y1=m(x+x1)dy1=mx1+cy_1=mx_1+cy1=mx1+c