Friday the 6th Practice

Front

What is the formula to calculate the average of a set of numbers?

Back

Average = (Sum of all values) / (Number of values)

Front

If there are 5 ice cream cones for every 3 brownies sold, how do you find the number of ice cream cones sold given the number of brownies?

Back

Use the ratio: (Ice Cream Cones / Brownies) = (5 / 3). Multiply the number of brownies by (5/3) to find the number of ice cream cones.

Front

What is the definition of slope in a linear equation?

Back

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

Front

How do you simplify the expression -16 + (-64) + 64 + (-52)?

Back

Combine like terms: -16 - 64 + 64 - 52 = -68.

Front

What is the probability formula for drawing a specific outcome from a set?

Back

Probability = (Number of favorable outcomes) / (Total number of outcomes)

Front

How do you calculate the total number of outcomes when drawing socks of different colors?

Back

Total outcomes = Sum of all socks. For Jessica: 4 blue + 5 white + 3 pink = 12 total socks.

Front

What is the probability of drawing a white or pink sock from Jessica's drawer?

Back

Probability = (Number of white socks + Number of pink socks) / Total socks = (5 + 3) / 12 = 2/3.

Front

What does it mean for points to lie on a line in a coordinate plane?

Back

It means that the points satisfy the linear equation of that line, having a consistent slope.

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

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

Front

What is the significance of a negative slope in a linear graph?

Back

A negative slope indicates that as x increases, y decreases, showing an inverse relationship.