Can't figure it out will give brainliest answer4. suppose y varies directly with x, and y = 24 when x=8. what is the value of y when x=10? a) 10b) 30c) 80d)2405. what is an equation for the line with slope 2/3 and y-intercept 9? a) y = 2/3xb) y=9xc) y = 2/3x + 9d) 6= 9x +2/36. what is an equation in slope-intercept form for the line that passes through the points (1,-3) and (3,1)? a) y=3x+1b) y=x-3c) y=2x+5d) y= 2x-5