Escarcega Quarter 2 Review Algebra 1

Polynomials

100

An expression with three terms is called this.

Trinomial

200

The sum when you add 3x²+2x+5 and x²-5

4x²+2x

300

Multiply: (x-4)(x+3)

x²-x-12

400

Multiply (x-2)( 4x²-15x+1)

4x³-23x²+31x-2

500

(3x-1)² -3(x²+5)

6x²-6x-14

Scatterplots

100

A plot where the data is mostly going uphill has a _________ correlation

positive

200

The equation of the line of best fit after putting data into the calculator, the linear regression function gives this output:

a=2.5

b=-3

r=.904

y=2.5x-3

300

The correlation after putting data into the calculator, the linear regression function gives this output:

a=2.5

b=-3

r=.904

Positive correlation (because r=.904)

400

The three main types of correlation

Positive, Negative, or little to no correlation

500

The correlation that exists between s and h if you were given the shoe size s and the heights h of one hundred 25 year old men. 

positive correlation

Linear Equations

100

The slope in the linear equation y=-3x+1

m = -3

200

Written in slope intercept form, 4x-3y=12

y=3/4 x - 4

300

The solution to the system

9x-5y=-30

x+2y=12

(0,6)

400

The equation of the line that passes through (-2,5) and (-6,8)

y=-3/4x+7/2

500

The number of days spent in each location if your family is planning a 7 day trip to Florida. You estimate that it will cost $275 per day in Tampa and $400 per day in Orlando. Your total budget for the 7 days is $2300. 

4 days in Tampa

3 days in Orlando

Inequalities

100

The result when checking if (1,-3) is a solution to 12x + 4y => 3

NOT A SOLUTION

200

A graphical solution to

Y>= -3X-1

Y<X+2

See graph 

300

The graph of y<-3x+3, y>x-1

see graph

400

The number of solutions this system has

1/2x+5y=2

-x-10y=-4

Infinitely Many

500

The number of solutions the system below has

y=2x+2

y=2x-3

None

Potpourri

100

The name of the number in front of a variable

Coefficient

200

The exponent when you add -3x² and 4x²

2

300

The r value that tells how well a function fits a set of data

correlation coefficient

400

The solution that (IS/IS NOT) included on the boundary of y>3x-5

(0, -5)

IS NOT 

500

The minimum number of pounds of beef and vegetables that a restaurant must order to satisfy the recipe that calls for no more than twice as many pounds of vegetables as beef. The owner buys vegetables at $1.39 per pound and beef at $1.79 per pound and will order a total of 150 pounds of food.

100 lbs of vegetables

50 lbs of beef