Porabolas

Question 1

Solve x(x-1)=0

Answer 1

x=0 or 1

Question 2

What is critical value?

Answer 2

What x must equal for the equation to be equal to 2. Also the x points on a parabola

Question 3

What are some things about what is graphed from y=x(2)

Answer 3

Its a minimum(happy) parabola

Question 4

Difference between y=x(2) and y=x(2)+2?

Answer 4

The second has moved up 2

Question 5

What are some things about what is graphed from y=-x(2)

Answer 5

It a maximum(sad) parabola

Question 6

Difference between y=x(2) and y=(x-2)(2)

Answer 6

It moves to the right 2

Question 7

Difference between y=x(2) and y=2x(2)

Answer 7

It gets skinnier

Question 8

Difference between y=x(2) and y=1/2x(2)

Answer 8

It gets fatter

Question 9

How do you find the turning point?

Answer 9

Use the axis of symmetry formula and sub that in as the x value to the original equation

Question 10

Basic formula for a circle

Answer 10

x(2)+y(2)=r(2)

Question 11

How big is the radius of x(2)+y(2)=9?

Answer 11

3. The square root of 9

Question 12

Difference between x(2)+y(2)=4 and (x-2)(2)+(y-3)(2)=4?

Answer 12

The centre of the circle moves to (2,3) but the radius stays the same, from that point

Question 13

What is the square method?

Answer 13

x=-b+-square root(b(2)-4ac

All over 2a

Question 14

What is the axis of symmetry formula?

Answer 14

-b/2a

Question 15

2x(2)-3x-5 cuts the y intercept where?

Answer 15

-5 (it is also skinny)

Question 16

What is a tangent?

Answer 16

When there is a parabola and a line that have one point of intersection

Question 17

What is a secant?

Answer 17

When there is a parabola and a line that have two points of intersection

Question 18

What can’t you forget when solving simultaneous equations?

Answer 18

To solve for x AND y

Question 19

What is the trinomial equation thing?

Answer 19

ax(2)+bx+c=0

Question 20

Sum and difference of two cubes +/- order?

Answer 20

Same, opposite, always positive

Question 21

Sum and diff of 2 cubes?

Answer 21

(Cube root of both)(square of first cube root, cubes roots x together, square of second cube root)