Coordinate Geometry

Question 1

Points on the axes

Answer 1

Are not in any of the quadrants

Question 2

Every possible line in the x-y plane

Answer 2

Has its own unique question

Question 3

Every point on a line

Answer 3

satisfies the equation of the line

Question 4

Slope

Answer 4

rise over run

Question 5

Slope

Answer 5

Slope between ANY two points on a line

Question 6

Slope could be

Answer 6

2k and k; up 2k and right k; keep on adding the slope

Question 7

Bigger slope number

Answer 7

Steeper

Question 8

Slope of 1/-1

Answer 8

45 degree angle with the axis

Question 9

x and y intercepts

Answer 9

plug in 0 for y and x; can get the intercept from any equation

Question 10

If you have two points

Answer 10

then find the base using triangle and then add the ex intercept

Question 11

if you add rise and run to the existing slope then you can find another point on the line**

Answer 11

**

Question 12

multiply by 5

Answer 12

times 10 and then half

Question 13

If a circle is centered at the origin then

Answer 13

each radius has a horizontal leg of abs x and a vertical leg of abs y so rsquared= xsquared+ysquared*

Question 14

Horizontal and vertical distances in an x y plane

Answer 14

Subtraction

Question 15

For a circle in the x-y plane

Answer 15

Each slanted radius is the hypotenuse; sometimes it forms two isosceles triangles

Question 16

Every point on the pep bisector of a line is

Answer 16

Equidistant from the two end points of a line

Question 17

For the line x=y

Answer 17

x=y, 45degree with the x axis;above the line y>x;

Question 18

reflection of line x=y

Answer 18

signs opp for both

Question 19

every point on x=y is eqidistant

Answer 19

from the line and its reflection; two isosceles from every point on that linetriangle

Question 20

y=-x;

Answer 20

two points are switched and their signs are switched; same properties about isosceles triangle

Question 21

Any point on the mirror line is equidistant from

Answer 21

the original line and its reflected image

Question 22

Parabola

Answer 22

Vertex= line of symmetry

Question 23

ax^2+bx+

c

Answer 23

When a>0; upwards; abs a>1 skinny; x intercepts are the solutions of the equation when it is set to 0