Algebra 1 STAAR - Linear Review

Front

What is the slope of a line that is horizontal?

Back

Zero

Front

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

Back

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

Front

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

Back

It refers to the change in y (vertical) over the change in x (horizontal) between two points on a line.

Front

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

Back

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

Front

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

Back

Slope (m) = (y₂ - y₁) / (x₂ - x₁).

Front

What is the y-intercept of a line?

Back

The y-coordinate where the line crosses the y-axis (x=0).

Front

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

Back

The line is vertical, meaning it goes straight up and down.

Front

What is the x-intercept of a line?

Back

The x-coordinate where the line crosses the x-axis (y=0).

Front

How can you identify a linear function from a set of points?

Back

If the points form a straight line when graphed, they represent a linear function.

Front

What is the difference between a positive slope and a negative slope?

Back

A positive slope rises from left to right, while a negative slope falls from left to right.