Review (Lines, Slopes, Like Terms, etc.)

Front

What is the equation for the total cost of a holiday meal for x people, given a cost of $12.50 per person and a delivery fee of $30?

Back

y = 30 + 12.5x

Front

In the equation y = 4x + 3, what is the slope?

Back

4

Front

If admission to a fair is $5 and each ride costs $0.50, how many rides can you go on with $20?

Back

30 rides

Front

Simplify the expression: -9w + 7 - 4w - 16.

Back

-13w - 9

Front

What is the best method for solving the system of equations: -4x - 2y = -12 and 4x + 8y = -24?

Back

Elimination

Front

What is a slope in a linear equation?

Back

The slope is the ratio of the rise (change in y) to the run (change in x) between two points on a line.

Front

Define like terms in algebra.

Back

Like terms are terms that have the same variable raised to the same power.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and reduce it to its simplest form.

Front

What is the formula for the slope-intercept form of a linear equation?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the y-intercept of a linear equation?

Back

Set x = 0 in the equation and solve for y.