Answer:B
Step-by-step explanation:
Answer: look at the picture that the answer to it
Step-by-step explanation: Hope this help :D
You have to jusitfy the step that leads from sin (x) = a/c and cos(x) = b/c to sin^2 (x) + cos^2(x) = [a^2 / c^2] + [b^2 / c^2].
As you can see go from the first statement to the second by substituting the value of sin(x) by a/x and the value of cos(x) by b/c.
Then, the answer is the option b. substitution property of equality.
Answer:
The equation of the parabolic function is :

Step-by-step explanation:
The standard equation of a parabola is given by:

where
represents the vertex of the parabola.
From the graph shown in figure we can find the vertex of the parabola which is the minimum point of parabola and lies st point 
So, we can say:

Plugging in the values of vertex in standard equation of parabola,

Simplifying the equation:

We can find value of
by plugging in a point from the graph.
Using point (0,-2) which lies on graph.
Plugging in the given point.


Adding 3 to both sides.


∴ 
Plugging in
, the equation of parabola can be written as:
