I need help, pls!! Thank you guys very much

How do you use the elimination method for this question? explain, because i really want to understand!

Choose the equation that represents the graph below: (1 point) graph of a line passing through points negative 3 comma 0 and 0 comma 3 y = x − 3 y = −x + 3 y = −x − 3 y = x + 3 will award !

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?