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Answer:
<h2>First graph.</h2>Step-by-step explanation:
The given function is
Observe that the three units are a translation in horizontal direction. Specifically, indicates a 3 units translation rightwards, because negative units added to means rightward movement. So, we need to a curve moved 3 units to the right.
Notice that the first graph is the only one moved three units rightwards. We deduct this because the function showed by the first graph is the only which crosses x=3.
Therefore, the right answer is the first graph.
Answer:
r = 7
Step-by-step explanation:
The equation of a circle centred at the origin is
x² + y² = r² ( where r is the radius )
x² + y² = 49 ← is in this form
with r² = 49 ⇒ r = = 7