SAT Subject Test Mathematics Level 1

POSSIBILITIES AND PROBABILITY POWERS AND ROOTS 42 . Counting the Possibilities The fundamental counting principle: ...

45 . Raising Powers to Powers To raise a power to a power, multiply the exponents: (x^3 )^4 = x3×4 = ...

ABSOLUTE VALUE ALGEBRAIC EXPRESSIONS 49 . Negative Exponent and Rational Exponent To find the value of a ...

To combine like terms, keep the variable part unchanged while adding or subtracting the coefficients: 2 a + ...

FACTORING ALGEBRAIC EXPRESSIONS each term in the first polynomial by each term in the second. After mult ...

Recognize polynomials that are squares of binomials: For example, 4 x^2 + 12x + 9 factors to (2x + 3)^2 , a ...

SOLVING EQUATIONS 62 . Solving a Linear Equation To solve an equation, do whatever is necessary to both s ...

is to write a system of equations–one equation for each set of information. Use variables that relate ...

FUNCTIONS To solve an inequality, do whatever is necessary to both sides to isolate the variable. Just re ...

COORDINATE GEOMETRY 71 . Domain and Range of a Function The domain of a function is the set of values for wh ...

To find the distance between R(3,6) and S(5,−2): 73 . Using Two Points to Find the Slope The slope of the l ...

LINES AND ANGLES The slope is 75 . Using an Equation to Find an Intercept To find the y-intercept, yo ...

In the figure above, the angles marked a° and b° are adjacent and supplementary, so a + b = 180. Furtherm ...

TRIANGLES—GENERAL 79 . Interior and Exterior Angles of a Triangle The three angles of any triangle add up t ...

In the figure above, a + b + c = 360. 80 . Similar Triangles Similar triangles have the same shape: c ...

The height is the perpendicular distance between the side that’s chosen as the base and the opposite vertex. I ...

RIGHT TRIANGLES Equilateral triangles are triangles in which all three sides are equal. Since all the sides are ...

In the right triangle shown, one leg is 30, and the hypotenuse is 50. This is 10 times 3-4-5. The other leg i ...

OTHER POLYGONS If the hypotenuse is 6, then the shorter leg is half that, or 3, and then the longer leg is ...

Quadrilateral ABCD above is shown to have three right angles. The fourth angle therefore also measures ...