Exploring Adding and Subtracting Rational Expressions

What is the formula used to find the axis of symmetry in a quadratic equation?

• x = -B/(2a)

• x = B/(2a)

• x = -2B/a

• x = 2B/a

How do you find the vertex of a parabola?

• Divide x by 2 and subtract from y

• Multiply x by 2 and add to y

• Substitute x into the equation and solve for y

• None of the above

What is the vertex of the parabola if x = 0 and y = 0?

• (0, 0)

• (1, 1)

• (2, 2)

• (-1, -1)

What is the next step after plotting the vertex on a graph?

• Draw a line of symmetry

• Plot two points before and after the vertex

• Label the graph

• Erase the graph and start over

What value of x is used if B and C are zero in the equation?

• 0

• 1

• 2

• -1

What should be plotted after determining the vertex and axis of symmetry?

• The coefficients of the equation

• The domain and range

• Additional points to form the shape of the parabola

• The intercepts on the axes

How do you determine the points to plot around the vertex?

• Select random points on the graph

• Only use negative x-values

• Choose points symmetrically around the vertex

• Only use positive x-values

What ensures the symmetry of a parabola?

• Equal spacing of x-values

• Random placement of points

• Using only positive x-values

• None of the above

What is the result of plugging in x = -1 into the equation y = x^2?

• 2

• 1

• -1

• 0

How do you verify the correctness of a parabola graph?

• Check the symmetry

• Count the number of points

• Measure the height of the parabola

• All of the above