# Hotmath Practice Problems

Title:
Hotmath Algebra 2
Author:
Hotmath Team

Problem: 1

The coordinates of vertex of a parabola are V(3, 2) and equation of directrix is y = –2. Find the coordinates of focus.

Problem: 3

The coordinates of focus and vertex of a parabola are F(2, –2) and V(2, –5) respectively. Find the equation of directrix.

Problem: 5

Find the direction in which the parabola with vertex at (1,1) and focus (1,4) open.

Problem: 7

Find an equation of parabola with focus (0, 0) and directrix y = 6, also graph it.

Problem: 9

Find an equation of parabola with focus (0, 4) and directrix x = 4, also graph it.

Problem: 11

Sketch the parabola:

y2 = 8x

Problem: 13

Sketch the parabola:

x2 = 4y

Problem: 15

Determine whether the parabola has a vertical or horizontal axis.

y = –5x2

Problem: 17

Determine whether the parabola has a vertical or horizontal axis.

2y2 = 5x

Problem: 19

Decide whether the parabola opens up, down, left, or right.

Problem: 21

Decide whether the parabola opens up, down, left, or right.

–7x2 = 4y

Problem: 23

Decide whether the parabola opens up, down, left, or right.

9y2 = x

Problem: 25

Tell whether the parabola opens up, down, left, or right.

2y2 = – 6x

Problem: 27

Does the parabola open left, right, up, or down?

Problem: 29

Does the parabola x2 + 16y = 0 open left, right, up, or down?

Problem: 31

Find the focus and directrix of the parabola.

3y2 = x

Problem: 33

Find the focus and directrix of the parabola.

x2 = –24y

Problem: 35

Graph the equation and then find the focus and directrix of the parabola.

x2 = –5y

Problem: 37

Graph the equation and then find the focus and directrix of the parabola.

y2 = 16x

Problem: 39

Graph the equation and then find the focus and directrix of the parabola.

Problem: 41

Identify the focus and directrix, and then graph the parabola:

Problem: 43

Identify the focus and directrix, and then graph the parabola:

x2 = –6y

Problem: 45

Give the standard form of the equation of the parabola with given focus (–1, 0) and vertex at (0, 0).

Problem: 47

Give the standard form of the equation of the parabola with given focus (0, –5/8) and vertex at (0, 0).

Problem: 49

Give the standard form of the equation of the parabola with given directrix

y = –5 and vertex at (0, 0).

Problem: 51

Give the standard form of the equation of the parabola with given directrix x = 8 and vertex at (0, 0).

Problem: 53

Find the equation of a parabola with directrix y = 10 and vertex at the origin.

Problem: 55

Find the equation of a parabola with focus at (0, –8) and vertex at the origin.

Problem: 57

Find whether the given equation is a parabola or a circle and then graph the equation.

7x2 + 7y2 = 252

Problem: 59

Find an equation of parabola with focus (2, 4) and vertex (2, 2), and graph it.

Problem: 61

Find the vertex, focus, directrix, and axis of symmetry of the parabola:

x2 + 4y + 2x –3 = 0

Problem: 63

Find the vertex, focus, directrix, and axis of symmetry of the parabola:

y2 – 4y – 4x + 2 = 0