The graph of which of the following functions has a vertex at (4, -3)?
f(x) = x2² + 8x + 19
f(x) = x² - 8x + 19
f(x) = x² + 8x + 13
f(x) = x² - 8x + 13

Therefore the answer is the fourth option y = f(x) =  - 8x + 13

Therefore when x = 4 then y = -3 from the equation of parabola and this is the required vertex.

Step-by-step explanation:

i) f(x) = + 8x + 19    =   + 3. SO the vertex is at (-4, 3)

Therefore the answer is the fourth option y = f(x) =  - 8x + 13

 = (  - 8x + 16) + 3  = - 3

Therefore when x = 4 then y = -3 from the equation of parabola and this is the required vertex.

a) 32pie square meters

step-by-step explanation: