If the line x = 3 is the axis of symmetry of a parabola, which coordinates below could be x-intercepts of the parabola? 0 (-8.0) and (-2,0)
0 (-1,0) and (5,0)
0 (-1,0) and (7,0)
O (-3,0) and (3, 0)

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!