Unit 2B, Part I REVIEW

Front

What is the y-intercept of a line?

Back

The y-intercept is the point where the line crosses the y-axis, represented as (0, y).

Front

Given the ordered pairs (1, 3), (9, 10), (0, -4), (8, 9), (4, 0), identify the y-intercept.

Back

(0, -4)

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 the slope of a line is -2/7 and it passes through the point (3, 4), how do you find the value of y for the point (10, y)?

Back

Use the slope formula: y - 4 = (-2/7)(10 - 3).

Front

What is the slope of the line that passes through the points (-4, 7) and (-6, -4)?

Back

11/2

Front

What does a negative slope indicate about a line?

Back

A negative slope indicates that the line is decreasing from left to right.

Front

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

Back

The y-intercept indicates the value of y when x = 0, showing where the line intersects the y-axis.

Front

Identify the y-intercept of the graph represented by the equation y = 2x - 5.

Back

The y-intercept is -5, represented as (0, -5).

Front

Given the equation of a line, how can you find the y-intercept?

Back

Set x = 0 in the equation and solve for y.

Front

What is the formula for the slope-intercept form of a linear equation?

Back

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