TSI Practice Dec 12 Practice TWO

Front

What is the formula to calculate percent discount?

Back

Percent Discount = ((Original Price - Sale Price) / Original Price) * 100

Front

Calculate the percent discount if a novel is bought for $12.00, originally priced at $20.00.

Back

40.0%

Front

What is the slope formula for a line passing through two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1)

Front

Find the slope of the line that passes through points (6, -5) and (-3, 10).

Back

Slope = -5/3

Front

What is the equation of a line in slope-intercept form?

Back

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

Front

Determine the equation of the line that passes through points (6, -5) and (-3, 10).

Back

y = -\frac{5}{3}x + 5

Front

What is the probability formula for selecting an item without replacement?

Back

P(A) = (Number of favorable outcomes) / (Total number of outcomes)

Front

Calculate the probability of selecting a blue marble twice without replacement from a bag of 5 red, 6 green, 8 blue, and 2 white marbles.

Back

P(blue, blue) = (8/21) * (7/20) = \frac{2}{15}

Front

What does it mean for two lines to be perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.

Front

Identify if the lines y = \frac{1}{4}x + 5 and y = -4x + 3 are parallel, perpendicular, or neither.

Back

They are perpendicular.