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Please help me as soon as possible!!! I have been struggling.
Solution
It is horizontal compression by a factor of 2
f(x) = -4x-7
lets assume that g (x) is the new function
g(x) = f(2x) = -4(2x)-7
g(x) =f(2x) =-8x-7
the x value is to be compressed by 2 which means divided by half so that when plugged into f(2x) the y value is unchanged.
for example f (4) = -4(4)-7 = -23
g(2) = -8(2) -7 = -23
the x value had to be compressed on the new function in order to keep the y value the same