quadratics

Question 1

when you graph a parabola what do you do first?

Answer 1

set the equation equal to 0 to find the roots

Question 2

What do you do second when you have a coordinates roots in a parabola?

Answer 2

you find the axis of symmetry and plug that into the original problem to find the y value of the vertex

Question 3

What is the quadratic equation?

Answer 3

y=ax^2+bx+c

Question 4

what is a in the quadratic equation?

Answer 4

a is the second difference divided by 2.

Question 5

How do you know if the model is quadratic?

Answer 5

the second difference is the same. that is your a

Question 6

what is the exponential equation?

Answer 6

y=xf^x

Question 7

what is x in the exponential equation?

Answer 7

x is the y coordinate when x is zero.

Question 8

what is r in an exponential equation?

Answer 8

r is the growth value of y in the table.

Question 9

what is the linear equation.

Answer 9

y=mx+b

Question 10

how do you find m in the linear equation?

Answer 10

you divide the y changing factor by the x changing factor.

Question 11

what is b in a linear equation.

Answer 11

b is the y value when x is zero.

Question 12

what do you look for when solving problems with square roots?

Answer 12

you look for perfect squares.

Question 13

what do you look for when solving equations?

Answer 13

What x equals.

Question 14

What we is the quadratic formula?

Answer 14

you knownthis

Question 15

what is the b equation so find x in projectile motion

Answer 15

-b/2a

Question 16

how do you find the y value of the vertex ?

Answer 16

plug the axis of symmetry back into your problem.

Question 17

when you graph intercept form, what do you do first?

Answer 17

first you find the roots. always the opposite signs if in parentheses.

Question 18

what is a in this problem for graphing in intercept
y=2(x+3)(x-1) form?

Answer 18

a is 2

Question 19

how do you find the y value in the vertex?

Answer 19

you plug in the axis of symmetry into the original problem