Math 8 Chapter 4 Flashcard 12.13.2024

Front

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

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the perimeter of a circle?

Back

The perimeter (circumference) of a circle is found using the formula C = 2πr, where r is the radius.

Front

What is the formula for the area of a rectangle?

Back

The area of a rectangle is calculated using the formula A = length × width.

Front

What does the slope of a line represent?

Back

The slope of a line represents the rate of change of y with respect to x, indicating how steep the line is.

Front

How do you write an equation from a pattern?

Back

To write an equation from a pattern, identify the relationship between the variables and express it in the form y = mx + b.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is calculated using the formula A = 1/2 × base × height.

Front

What is the significance of the y-intercept in a linear equation?

Back

The y-intercept is the point where the line crosses the y-axis, representing the value of y when x = 0.

Front

How do you determine the area of a composite figure?

Back

To determine the area of a composite figure, break it down into simpler shapes, calculate their areas, and then sum them up.

Front

What is the relationship between the coefficients in a linear equation?

Back

The coefficients in a linear equation indicate the slope and y-intercept, determining the line's steepness and position.

Front

How do you find the slope between two points?

Back

The slope (m) between two points (x1, y1) and (x2, y2) is calculated using the formula m = (y2 - y1) / (x2 - x1).