A straight line has equation 8y = 4x + 21. Which of the following is true
(1) The slope is 0.5 and the y intercept is 2.6
(2) The slope is 5 and they intercept is 1.6
(3) The slope is 0.5 and the y intercept is 1.6
(4) The slope is 5 and they intercept is 2.6