a group of students is donating blood during a blood drive. a student has 9/20 probability of having type 'o' blood and a 2/5 pr
2 answers:
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we know that
The equation of the vertical parabola in vertex form is equal to
where
(h,k) is the vertex
The axis of symmetry is equal to the x-coordinate of the vertex
so
------> axis of symmetry of a vertical parabola
we will determine in each case the axis of symmetry to determine the solution
<u>case A)</u>
<u>Convert to vertex form</u>
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Factor the leading coefficient
Complete the square. Remember to balance the equation by adding the same constants to each side
Rewrite as perfect squares
the vertex is the point
the axis of symmetry is
therefore
the function has an axis of symmetry at
<u>case B)</u>
<u>Convert to vertex form</u>
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Factor the leading coefficient
Complete the square. Remember to balance the equation by adding the same constants to each side
Rewrite as perfect squares
the vertex is the point
the axis of symmetry is
therefore
the function does not have a symmetry axis in
<u>case C)</u>
<u>Convert to vertex form</u>
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Complete the square. Remember to balance the equation by adding the same constants to each side
Rewrite as perfect squares
the vertex is the point
the axis of symmetry is
therefore
the function does not have a symmetry axis in
<u>case D)</u>
<u>Convert to vertex form</u>
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Complete the square. Remember to balance the equation by adding the same constants to each side
Rewrite as perfect squares
the vertex is the point
the axis of symmetry is
therefore
the function does not have a symmetry axis in
<u>the answer is</u>