3.(03.06) Using the completing-the-square method, rewrite f(x) = x2 + 4x – 1 in vertex form. (2 points)
O f(x) = (x + 2)2 + 1
O f(x) = (x + 2)2
O f(x) = (x + 2)2 + 4
O f(x) = (x + 2)2-5

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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!

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