Rising 9's Jeopardy

Vocabulary

50

The answer to a division problem.

What is the quotient?

100

 A _________ is an equation of a line.

 linear equation

150

 The __________ of a linear equation is Ax +By = C.

Standard Form

200

 Subtract the polynomials: (9x²-4x+11) - (3x²-2x+2)

6x²-2x+9

250

Define coefficient: 

A numerical or constant quantity placed before and multiplying the variable in an algebraic expression

One Variable Linear Equations

50

 Solve the equation for y:

1. 3x + y = 1

 y = -3x + 1

100

Any two points on a nonvertical line can be used to determine the _________.

What is the slope.

150

What is the value of x in the equation: 

3x - 15 = 21

12

200

Find the value of y in the equation:

3y + 3 = 3y/2

y = -2

250

Solve for x:

2x - 3 / 4  = x + 5 / 2 

-3 = 10 (it's a contradiction!) no solution

Lines

50

What is the formula to find the slope of the line?

y_{2 -} y_{1 /} X₂ - X₁

100

 Find the slope of the line passing through each pair of points.

 (2,-8) and (4,1)

slope = 9/2 

150

 Tickets to see a movie cost $5 for children and $8 for adults. The equation 5x + 8y = 80 represents the number of children (x) and the number of adults (y) who can see the movie with $80. If no adults see the movie, how many children can see the movie with $80?

16 kids

200

Find the slope of a vertical line:

 undefined

250

A slope that is negative will have a graph that looks like what?

Its falls from left to right.

Properties of Mathematics

50

Algebra: Solve each equation for y:

1. 3 - 1/2y = 5x

 y = -10x + 6

100

Which property best defines this equation:

9 x 5 = 5 x 9

Commutative Property of Multiplication

150

 Use the distributive property to simplify:

 -3(x-10)+x

 - 2x + 30

200

The Associative Property of addition tells us what? And show this property in algebraic terms. 

You can group numbers in any way when adding, and the sum will stay the same.

250

13 x 1 = 13 

What property does this equation show?

The multiplicative identity

More Lines!

50

What is the slope of line perpendicular to another line? 

The opposite reciprocal.

100

 Find the x-intercept and y-intercept of the following equation:

1. 2x - 3y = 5

Algebra: 

x-intercept = (5/2, 0)

y-intercept = (o, -5/3)

150

A positive slope will look like what? 

it rises from left to right

200

A horizontal line has what slope? 

zero slope

250

What are three things you need to remember about standard form? 

1) A, B, and C must be integars (no fractions or decimals)

2) A should be positive (if it's negative, multiply the whole thing by -1)

3) the x term always comes first (just remember the formula, ax + by = c)