91Ó°ÊÓ

Find the midpoint of line segment with endpoints at given coordinates$\left(8,9\right)\text{and}\left(-3,-4.5\right)$.

Identify the coordinates of the vertex and focus, the equations of the axis of symmetry and directrix, and the direction of opening of the parabola with the given equation $y={\left(x-3\right)}^2-4$. Then find the length of latus rectum and graph the parabola.

Determine whether the functions $f\left(x\right)=x-2$and$f\left(x\right)=x-2$ are inverse functions. (Lesson 7-8)

Simplify the expression $\left(2+4i\right)+\left(-3+9i\right)$.

Simplify the expression $\left(4-i\right)-\left(-2+i\right)$.

Simplify the expression $\left(1-2i\right)\left(2+i\right)$.

Write the equation $y=x^2+6x+9$ in the form $y=a{\left(x-h\right)}^2+k$.

Write the equation$y=x^2-4x+1$ in the form $y=a{\left(x-h\right)}^2+k$.

Write the equation in the form $y=a{\left(x-h\right)}^2+k$when $a=3,h=1\text{and}k=2$.

Write the equation $y=3x^2-6x+5$ in the form$y=a{\left(x-h\right)}^2+ky=a{\left(x-h\right)}^2+k$.