Maths-
SAT
Easy
Question
y=(x+5)2-8
The equation above can be represented by a parabola in the xy-plane. The parabola is then translated so that the vertex is at (0, 0). Which of the following best describes the translation?
- 5 units in the negative x direction and 8 units in the negative y direction
- 5 units in the negative x direction and 8 units in the positive y direction
- 5 units in the positive x direction and 8 units in the negative y direction
- 5 units in the positive x direction and 8 units in the positive y direction
The correct answer is: 5 units in the positive x direction and 8 units in the positive y direction
If vertex at (0, 0), that function expression is y = x2
From y = (x + 5)2 – 8 to y = (x + 5)2, there will be 8 units in the positive y-direction.
From y = (x + 5)2 to y = x2 there will be 5 units positive x-direction.
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