Which algebra formula should I use first?

Start by identifying whether the problem is linear, quadratic, a line, or a system.

Do formulas replace steps?

No. The calculator pages show how the formula is applied step by step.

Reference algebra formulas for equations, slope, factoring, radicals, and systems.

This algebra formula page supports the equation, slope, factoring, and graphing calculators.

Core formulas include ax + b = c, y = mx + b, y - y1 = m(x - x1), and the quadratic formula.

Problem: 2x + 3 = 11

Solution: Use x = (c - b) / a to get x = 4.

Problem: Points (1, 2) and (5, 10)

Solution: Use m = (10 - 2) / (5 - 1) = 2.