Question

NO LINKS!! Please help me with this statement Part 3mm​

Answer 1

• y = x² + 2x

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Vertex form of a quadratic function:

• y = a(x - h)² + k, where (h, k) is vertex and a - constant

Given (h, k) = (-1, -1) and a point (0, 0).

Substitute all into equation and solve for a:

• 0 = a(0 - (-1))² - 1
• 0 = a - 1
• a = 1

The parabola is:

• y = (x + 1)² - 1

Convert it to the standard form:

• y = (x + 1)² - 1
• y = x² + 2x + 1 - 1
• y = x² + 2x