Algebra 1 4.1 - 4.3 Flashcard Review

Front

Write the equation of the line through the points (7, 8) and (−12, −11).

Back

y = x + 1

Front

Write the equation of the line with slope -2 through the point (7, −1).

Back

y = −2x + 13

Front

Find the slope of the following equation: 3x - 6y = 12. (Hint: Get y alone first)

Back

1/2

Front

What slope is parallel to: m = 4?

Back

4

Front

Given that the slope is -4 and the y-intercept is -4, what is the equation of the line?

Back

y = -4x - 4

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 for two lines to be parallel?

Back

Two lines are parallel if they have the same slope.

Front

What does it mean for two lines to be perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.

Front

What is point-slope form of a line?

Back

y - y1 = m(x - x1), where (x1, y1) is a point on the line and m is the slope.