Please help fasttt!!
2 answers:
Answer:
a. x= -4 x=2
b. (-1,-9)
c. [-9,∞)
d. x=-1
Step-by-step explanation:
To find the roots or x intercepts, you set the parabola equal to 0 and solve.
0=+2x-8 which will equal (x+4)(x-2) so x= -4, 2
To find the vertex you will do , a=1 and b=2 so
which equals x= -1, to find the y value, you will plug x into the equation
y=+2(-1)-8 which means y=-9 so the vertex is (-1,-9)
The range is bottom to top so it is [-9,∞)
the AOS is equal to the x value of the vertex so x= -1
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The equation indicates that the center of the window is 12 feet from the ground and the distance the window spans 6 feet.
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On observing this equation we will get that the value of (a,b) is (4,12).
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