Answer: C (-2,1)
Step-by-step explanation:
1. Consider right triangle ABK. In this triangle AB is the hypotenuse, BK and AK are legs. By the Pythagorean theorem,
2. Use the definition of
Then
3. Consider right triangle ABD. In this triangle AD is the hypotenuse, AB and BD are legs. Since then
The leg that is opposite to the angle of 30° is half of the hypotenuse, so
4. The area of parallelogram aBCD is
y = x^2 + 1
Which statement best describes the curve?
The curve is a parabola with a vertex at (2, 1) and is traced from left to right for increasing values of t.
The curve is a parabola with a vertex at (2, 1) and is traced from right to left for increasing values of t.
The curve is a parabola with a vertex at (-2, -1) and is traced from left to right for increasing values of t.
The curve is a parabola with a vertex at (-2, -1) and is traced from right to left for increasing values of t.
A curve is described by parametric equations x = 2 - t;
y = x^2 + 1 statement the curve is a parabola with a vertex at (2,1) and is traced from left to right for increasing values of t is the best-described curve.
We use a parameter to describe equations then we are talking about Parametric Equations, that isWe can write both as functions of a parameter.
We have given the parametric equation
The parametric equation defines a group of quantities as functions of one or more independent variables called parameters.
So substituting the value of x in y we get,
So this equation represents a parabola where y is the dependent variable and t is the independent variable.
This equation is shown in the following figure, the best statement that describes the curve.
Therefore we can say that the curve is a parabola with a vertex at (2,1) and is traced from left to right for increasing values of t.
To learn more about the parametric equation visit: