8th Grade Math 1st Semester Review

Front

What is the formula to calculate the monthly savings needed to pay for college expenses?

Back

Monthly Savings = (Total Expenses - (Parents' Contribution + Scholarship)) / Number of Months

Front

Convert 0.0000457 to scientific notation.

Back

4.57 x 10^-5

Front

What does the slope of a line represent in a graph?

Back

The slope represents the rate of change of the dependent variable (y) with respect to the independent variable (x).

Front

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

Back

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

Front

If a person weaves 2 baskets every 3 hours, how many baskets can they weave in 18 hours?

Back

12 baskets

Front

What is the y-intercept of a line in the equation y = mx + b?

Back

The y-intercept (b) is the value of y when x = 0.

Front

What is the equation of a line with a slope of 1/3 and a y-intercept of -6?

Back

y = (1/3)x - 6

Front

How do you find the y-intercept from a linear equation in slope-intercept form?

Back

The y-intercept is the constant term (b) in the equation y = mx + b.

Front

What is the relationship between the slope and the steepness of a line?

Back

A larger absolute value of the slope indicates a steeper line.

Front

What is the formula for calculating the total cost after discounts?

Back

Total Cost = Original Price - (Discount Percentage * Original Price)