joejoefofana
29.08.2019 •
Mathematics
Match the parabolas represented by the equations with their foci. tiles y = -x2 + 4x + 8 y = 2x2 + 16x + 18 y = -2x2 + 5x + 14 y = -x2 + 17x + 7 y = 2x2 + 11x + 5 y = -2x2 + 6x + 5 pairs focus equation of parabola (-2.75, -10) arrowboth (2, 11.75) arrowboth (-4, -13.875) arrowboth (1.25, 17) arrowboth
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Ответ:
y = -x2 + 4x + 8
y = 2x2 + 16x + 18
y = -2x2 + 5x + 14
y = -x2 + 17x + 7
y = 2x2 + 11x + 5
y = -2x2 + 6x + 5
Standard formula : y = ax² + bx + c ; -(b/2a) is the x-coordinate of the vertex. Substitute the value of x to find the value of y.
Ответ:
its b
Step-by-step explanation: