Unit 3 Algebra 1 Vocab

Front

y = mx + b

Back

Slope-Intercept Form

Front

ax + by = c

Back

Standard Form

Front

Beginning point where the line crosses the y-axis

Back

Y-Intercept

Front

Δy/Δx represents the rate of change in a function.

Back

Slope/ Rate of change

Front

Slope Formula: \( \frac{y_2 - y_1}{x_2 - x_1} \)

Back

Slope Formula

Front

y - y₁ = m(x - x₁)

Back

Point-Slope Formula

Front

Parallel Lines:

Back

Lines that never cross.

Front

Perpendicular Lines:

Back

Lines that cross at a 90° angle; opposite reciprocal slopes.

Front

Direct Variation:

Back

A linear function through (0,0) with a constant rate.

Front

Vertical:

Back

Up and Down