Antoinette needs to solve this system of equations by graphing. which statements explain how she should graph the equations? check all that apply. 2x-7y=56 y=-2.5x+4 she should rewrite both equations in slope-intercept form. she should rewrite the first equation in slope-intercept form. she should find that the second equation has a slope of 4. when rewriting the first equation, she should subtract 2x from each side of the equation to get –7y by itself. after rewriting the first equation in slope-intercept form, she should find that both lines have negative slopes.