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Determine the quadratic function whose graph is given. The vertex is (−1, −1). The​ y-intercept is (0, 4).?

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  • Determine the quadratic function whose graph is given. The vertex is (−1, −1). The​ y-intercept is (0, 4).?


Answers

Answer #1 | 25/05 2017 16:40
The vertex tells you that the graph is shifted 1 unit to the left and 1 unit down, hence: y = k(x+1)² − 1 Apply the y-intercept: 4 = k(0+1)² − 1 k = 5 => y = 5(x+1)² − 1 = 5x² + 10x + 4
Positive: 53.333333333333 %
Answer #2 | 25/05 2017 16:56
y = (x+1)²(4+1)/(0+1)² - 1 which is y = 5x² + 10x + 4
Positive: 22.222222222222 %

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