Answer:
Step-by-step explanation:
The given function is f(x)=x.
If we stretch vertically by a factor of 4 and a translation of 4 units up then the new function becomes
But f(x)=x
We substitute to obtain the equation of g(x) as
g(x) = 4x + 4.
f(x) = x
Vertical stretch gives 4x.
A translation of 4 up gives 4x + 4.
the answer is d hope it helps
r = 6
To get the value of r we will use the pythagoras theorem a shown;
PR² = QR² + PQ²
(4+r)² = 8² + r²
Expand
16+8r+r² = 64 + r²
16 + 8r = 64
8r = 64 - 16
8r = 48
r = 48/8
Hence the value of r is 6
