Algebra 1 STAAR - Linear Review

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they have the same slope and will never intersect.

Front

How do you find the slope between two points?

Back

The slope (m) is calculated using the formula m = (y2 - y1) / (x2 - x1).

Front

What is the point-slope form of a linear equation?

Back

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

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is zero.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

What does 'rise over run' mean in the context of slope?

Back

'Rise over run' refers to the change in y (rise) divided by the change in x (run) between two points on a line.

Front

What are the slopes of parallel lines?

Back

The slopes of parallel lines are equivalent (the same).

Front

What are the slopes of perpendicular lines?

Back

The slopes of perpendicular lines are opposite reciprocals of each other.

Front

How do you convert from slope-intercept form to point-slope form?

Back

Start with the slope-intercept form y = mx + b, identify the slope (m) and a point (x1, y1) on the line, then use the point-slope form.

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, b) in the equation y = mx + b.