Adaptive Curriculum & Sub-Skill Diagnostics

Skill Mastery Tree & Topic Heatmap

Track your diagnostic mastery across all 32 granular Digital SAT & ACT sub-skills. Advance through mastery tiers from Novice to 800-Tier Grandmaster.

Overall Curriculum Mastery

88%

242 / 276 Questions Mastered

Algebra • 800 Tier👑 800 Tier Grandmaster

Linear Equations & Slope-Intercept

Solving single-variable equations, interpreting slopes $m$ as unit rates, and identifying $y$-intercepts in real-world contexts.

Essential Formulas & Rules:

y = mx + b, \quad m = \frac{y_2 - y_1}{x_2 - x_1}

Common College Board Trap to Avoid:

Confusing the $x$-intercept (when $y=0$) with initial starting value $b$ (when $x=0$).