Virginia Algebra 7-9

Algebra Vocabulary

100

A letter that represents a number

What is a variable?

200

An expression with an equal sign

What is an equation?

300

Property that lets you multiply a number across parentheses

What is the distributive property?

400

This type of equation includes an x² term and graphs as a curve called a parabola

What is a quadratic equation?

500

In a system of equations, this term describes when the lines never intersect

What is no solution?

Graphs

100

Name the slope of this graph equation:
y = 2x

What is 2?

200

What form is this equation in? y=2x+3

What is slope-intercept form?

300

A line goes through (2,6) and (0,2). What is the slope?

What is 2?

400

What is the equation of a line with slope -1 through the point (2,3) in point-slope form?

What is y - 3 = -1(x-2)?

500

The slope of y = 3x^2 at x = 0

What is 0?

Equations

100

x+4=12

What is 8?

200

2x-3=7

What is 5?

300

y = x + 1
y = -x + 5

What is (2,3)?

400

x²+5x+6=0

What is x=-2,-3?

500

x² = 49

What is +7 and -7?

Factoring

100

GCF of 8x² + 12x

What is 4x?

200

Factor x² - 9

What is (x-3)(x+3)

300

Factor x²+7x+10

What is (x+2)(x+5)?

400

Factor 2x² + 5x + 3

What is (2x+3)(x+1)?

500

Factor 6x²+8x+2

What is (3x + 1) (2x + 2)? (also, 2(3x+1)(x+1))

Misc

100

The slope of a horizontal line.

What is 0?

200

The slope of a vertical line.

What is undefined?

300

True or false: All parabolas open upward.

What is false?

400

A student evaluates 2(3+x)² as 2(3² + x²). Identify the mistake.

What is: Violating the order of operations by not squaring the binomial correctly?

500

Name the function rule:
1 -> 4

4 -> 13
2 -> 7
3 -> 10

What is f(x) = 3x+1?