Fall Exam Review Calc Alg 1

Front

What are the slopes of parallel lines?

Back

The slopes of parallel lines are the same.

Front

How do you calculate the percent of change?

Back

Percent of change = (New Value - Old Value) / Old Value * 100.

Front

If Mary lost 30 pounds from 180 pounds, what is the percent of change?

Back

17% Decrease.

Front

What is the formula for calculating percentage decrease?

Back

Percentage Decrease = (Original Price - Sale Price) / Original Price * 100.

Front

What was the percentage decrease in the price of a TV set from $500 to $413?

Back

17.4%.

Front

What is the equation for Jason's earnings based on subscriptions sold?

Back

Earnings = 25 + 3x, where x is the number of subscriptions.

Front

How do you set up an inequality for Jason to earn at least $68?

Back

25 + 3x ≥ 68.

Front

What is the slope-intercept form of a line?

Back

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

Front

How do you find the slope between two points (-4,-7) and (-6,9)?

Back

Slope (m) = (y2 - y1) / (x2 - x1) = (9 - (-7)) / (-6 - (-4)) = 8.

Front

What is the equation of a line that passes through (-4,-7) and (-6,9) in slope-intercept form?

Back

y = -8x - 39.