SAT Math skill
Quadratics, exponentials, polynomials, radicals, and equivalent expressions: about 35% of SAT Math.
9 articles · newest first
Understand what an exponent counts, learn the rules for combining powers, and avoid common traps with zero, negative signs, and negative exponents.
Read articleStandard, factored, and vertex form describe the same parabola, but each one hands you a different answer for free. Play with an interactive parabola and learn which form to reach for.
Read articleLinear growth adds the same amount each step; exponential growth multiplies by the same factor. See the two race on one graph, then learn to read a, b, and the growth rate straight from the equation.
Read articleAbsolute value means distance, and that one idea solves equations, inequalities, and graphs. Slide an interactive number line to see why |x − a| = b has two answers and when it has none.
Read articleSee multiplication as area, factor trinomials by finding two numbers, recognize special patterns at a glance, and check equivalence by substituting a number.
Read articleA line can cross a parabola twice, touch it once, or miss it completely. See all three cases on one graph, then solve by substitution and count solutions with the discriminant.
Read articleSquaring both sides or clearing denominators can create answers that do not actually work. Learn the solve-then-check routine, see exactly where a false solution fails, and practice with rational exponents.
Read articlef(3) is an output, f(a) = 7 is a clue, and f(x − 2) + 1 is a shifted graph. Learn to read function notation fluently and predict exactly how each change moves a graph.
Read articleEvery x-intercept of a polynomial is a factor in disguise. Learn to move between factors, zeros, and graphs, spot where a graph bounces instead of crossing, and use the remainder theorem shortcut.
Read articlePractice Advanced Math
Turn an article into points: practice a few questions on this skill while the idea is fresh.