Linear Graphs Review

Front

What is the term for the point where a line crosses the y-axis?

Back

y-intercept

Front

What is the name of the horizontal axis in a coordinate plane?

Back

x-axis

Front

What does a positive slope indicate about the direction of a line?

Back

The line rises from left to right.

Front

In the slope-intercept form of a linear equation, what does the variable 'm' represent?

Back

The slope of the line.

Front

What is the term for a slope that is not defined?

Back

Undefined slope, typically occurs with vertical lines.

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

What is the general form of a linear equation?

Back

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

Front

What does a negative slope indicate about the direction of a line?

Back

The line falls from left to right.

Front

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

Back

It represents the value of y when x is 0.

Front

How can you determine if a line is vertical or horizontal from its equation?

Back

A vertical line has an undefined slope and is of the form x = a; a horizontal line has a slope of 0 and is of the form y = b.