8th Grade Math Review #6

Front

What is the slope of a line?

Back

The slope of a line is a measure of its steepness, calculated as the rise over run (change in y over change in x).

Front

How do you calculate the slope between two points (x1, y1) and (x2, y2)?

Back

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

Front

What is the slope of a line that rises 3 units for every 2 units it runs?

Back

The slope is 3/2.

Front

What is the slope of a line that runs horizontally?

Back

The slope is 0.

Front

What is the slope of a line that falls as it moves from left to right?

Back

The slope is negative.

Front

If a ladder is placed 10 feet away from a 25-foot tall house, how tall does the ladder need to be to reach the top?

Back

The ladder needs to be 27 feet tall.

Front

How do you express 564,000,000 in scientific notation?

Back

5.64 x 10^8.

Front

What is the formula for converting a number to scientific notation?

Back

Move the decimal point to create a number between 1 and 10, then multiply by 10 raised to the number of places moved.

Front

What is the significance of the exponent in scientific notation?

Back

The exponent indicates how many places the decimal point has been moved.

Front

What is the slope of a line represented by the equation y = 7x + 3?

Back

The slope is 7.