Equations of Lines Test Review

Front

What does the y-intercept represent on a graph?

Back

The value of the variable when the other variable is zero; it indicates the starting point of the line on the y-axis.

Front

What is the y-intercept of the equation 4x + 5y = 20?

Back

(0, 4)

Front

Which point is on the line y - 3 = 5(x + 1)?

Back

(-1, 3)

Front

What is the slope of the line represented by the equation y = -2x + 3?

Back

Negative

Front

What does a positive slope indicate about a line?

Back

As the x-value increases, the y-value also increases.

Front

What does a negative slope indicate about a line?

Back

As the x-value increases, the y-value decreases.

Front

What is the slope-intercept form of a line?

Back

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

Front

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

Back

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

Front

What does it mean if a line has a slope of zero?

Back

The line is horizontal and does not rise or fall.

Front

What does it mean if a line has an undefined slope?

Back

The line is vertical and does not have a defined slope.