Please help I’ll mark brainliest!!
1 answer:
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Answer:
Since the input values are -7/2 and 2. So the answer is C.
Step-by-step explanation:
Given that when x-value is substituted into the function, you get 19. So in order to find the input value (x), you have to make the function equals 19 :
Next, you have to factorize it :
Lastly, solve it :
Answer:
(1.5,2.5)
Step-by-step explanation:
f(x) = 2x^2 - 6x + 7
Take the first derivative and set it equal to 0 (the slope is 0 at the vertex)
f'(x) = 4x -6
0 = 4x - 6
4x = 6
x = 3/2 or 1.5
If x = (3/2), then y = 2(3/2)^2 - 6(3/2) + 7
y = 2(9/4) - 18/2 + 7
y = (9/2) - 2
y = 2.5
See attached graph.
