30 terms

ECHS Algebra 1 Test 19

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Equation for the axis of symmetry
x = -b/2a
vertex of a parabola
the maximum or minimum point
quadratic equation
an equation which can be written in standard form of y = ax² + bx + c
linear equation
an equation which can be written in standard form of Ax + By = C
perfect square trinomial
the result of squaring a binomial ex: (F + L)² = F² +2FL + L²
difference of two squares
the result of multiplying conjugates ex: (F + L) (F - L) = F² - L²
grouping
when a polynomial has four or more terms you will need to factor by
FOIL
A method to multiply two binomials
asymptote
a line that a graph can never touch
gcf
used to reduce fractions - use only common factors and the lowest degree on the factor
lcd
used to add or subtract fractions - take every factor and the highest degree on the factor
absolute value
the distance a number is away from zero
compound inequality
two inequality statements joined together
Flip the inequality symbol
when you multiply or divide an inequality statement by a negative number
│x │ > pos#
x < opp pos # or x > pos #
│x │ < pos#
opp pos # < x < pos#
│x │ > neg #
x ε Reals
│x │ < neg #
│x │> 0
x ≠ 0
│x │≥ 0
x ε Reals
│x │≤ 0
x = 0
│x │< 0
< or >
In a linear inequality the line will be drawn as a dashed line and when graphing on a number line the endpoint will be open.
≤ or ≥
When graphing a linear inequality the line will be drawn as a solid line and when graphing on a number line the endpoint will be closed.
pythagorean theorem
Given a right triangle the sum of the squares of the legs equals the hypotenuse squared a² +b² = c²
midpoint
the point equal distance from two given points. The average of the x-coordinates and the average of the y-coordinates
distance formula
rational function
the graph will have a vertical asymptote at x = b and horizontal asymptote at y = c
simplest radical form
a radical which has no perfect squares under the radical
distance
rate x time