2nd Quarter CQA review

Solving Equations

100

7+x=19

What is 12?

200

2x + 13 = 5x + 4

What is 3?

300

Solve for y:

x + y = z

y=z-x

400

Solve for a:

ac=d

a=d/c

500

Use substitution to solve:

y=x+2

y+x =16

(7,9)

Domain and Range

100

When finding the domain of a continuous graph, you should scan from _______to _______.

What is left to right?

200

When finding the range of a continuous graph, you should scan from _______to_______.

What is Bottom to Top?

300

Given this data: 

x: 2,4,6

y: 1,3,5

What is the domain of the data?

What is 2,4,6?

400

a set of output values of a relation is called the...

range!

500

What symbols are used when finding the domain and range of continuous data?

What are inequality symbols! 

<,>,≤ ,≥ 

Graphing

100

What is the slope of this equation:

y= -5x + 7

what is m=-5?

200

What is the y intercept of this equation:

y - 5 = 3x

What is 5?

300

!DOUBLE JEOPARDY!

Put this equation in slope intercept form (used for graphing):

6x + 2y = 4

y = -3x + 2

400

How can you find an x-intercept by graphing?

Look where the line crosses the x-axis.

500

Find the slope of a line given these points:

(6,8) and (10,-6)

-7/2 

Polynomials

100

Multiply:

2x(6x³)

12x⁴

200

Add:

(2x+3)+(7x-5)

9x-2

300

Subtract:

(6x + 5) - (3x-2)

3x+7

400

Multiply: *Hint: binomials! FOIL!*

(x+5)(4x+5)

5x²+25x+25

500

Multiply:

(4x - 3)(x² + 2x + 5) 

4x³+5x²+14x−15

Word Problems

100

The temperature started at 60℉ and increases 5℉ per hour. Make an equation to represent the situation. 

Let x=hours

Let y=temperature 

y=5x+60

200

!DOUBLE JEOPARDY!

There must be at least 8 students to form the book club. Write an inequality to show the number of students needed to form the club.

x≥ 8

300

A cell phone company costs $210 for an activation fee. Each month costs $64. Let m represent the number of months. Write a rule in function notation for the situation.

f(x)=64m+210

400

A video store charges a monthly membership fee of $7.50, but the charge to rent each movie is only $1.00 per movie. Another store has no membership fee, but it costs $2.50 to rent each movie. 

How many movies need to be rented each month for the total fees to be the same from either company?

At 5 movie rentals their cost will be the same.

500

Mrs. Williams is deciding between two field trips for her class. The Science Center charges $75 plus $7 per student. The Discovery Museum simply charges $10 per student. 

For how many students will the Science Center charge less than the Discovery Museum?

x>25

So for more than 25 students, the Science Center will cost less.