Antoinette needs to solve this system of equations by graphing. Which statements explain how she should graph the equations? Check all that apply. 2 x minus 7 y = 56. y = negative 2.5 x + 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