Let f (x) = 4x2-5. A new quadratic function g (x) is the function f (x) stretched vertically by a factor of 2. What is the equation of this new function g (x) ? Question 5 options: g (x) = 4x2-3 g (x) = 8x2-10 g (x) = 4 (x+2) 2-5 g (x) = 8x2-5

Question

Mathematics

Max Mcgrath

6 May, 20:25

Let f (x) = 4x2-5. A new quadratic function g (x) is the function f (x) stretched vertically by a factor of 2. What is the equation of this new function g (x) ? Question 5 options: g (x) = 4x2-3 g (x) = 8x2-10 g (x) = 4 (x+2) 2-5 g (x) = 8x2-5

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Rubber · Answer 1

To vertically strech a function, f (x) by a factor of c, that is cf (x)

so strech vertically by 2 means times whole thing by 2

so

2 times (4x^2-5) = 8x^2-10

g (x) = 8x^2-10