Math 2B Algebra formulas reduced

Y the coefficient of the x x 2 3x 5 0 2 move the

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: x, square it and add it to both sides 2 2 9 29 3 3 x 2 3x + = 5 + = 5 + = 44 2 2 © 2005 Paul Dawkins b < p < b p >b xn + an 3 29 x = 2 4 (5) Use Square Root Property 3 29 29 x =± =± 2 4 2 (6) Solve for x 3 29 x= ± 2 2 Fo r a complete set of o nline Algebra no tes visit http://t uto rial.math.la mar.edu. © 2005 Paul Dawkins Functions and Graphs Constant Function y = a or f ( x) = a Graph is a horizontal line passing through t he point ( 0, a ) . The graph is a parabola that opens right if a > 0 or left if a < 0 and has a vertex b b at g , . 2a 2a Lin e/Linear Function y = mx + b or f ( x ) = mx + b Graph is a line with point ( 0, b ) and sl op e m. Circle 2 2 ( x h) + ( y k ) = r2 Graph is a circle with radius r and center ( h, k ) . Slo pe Slope of the line containing the two po ints ( x1 , y1 ) and ( x2 , y2 ) i s y2 y1 ri se = x2 x1 r un Slo pe – intercept form The equation of the line with slope m and y-int ercept ( 0, b ) i s y = mx + b Poi nt – Slope form The equation of the line with slope m and passing through the point ( x1 , y1 ) i s m= y = y1 + m ( x x1 ) 2 ( x h) 2 f ( x) = a ( x h) + k 2 The graph is a parabola that opens up if a > 0 or down if a < 0 and has a vertex at ( h, k ) . Parabola/Quadratic Function y = ax 2 + bx + c f ( x ) = ax 2 + bx + c The graph is a parabola that opens up if a > 0 or down if a < 0 and h...
View Full Document

This document was uploaded on 02/21/2014 for the course MATH 2B at UC Irvine.

Ask a homework question - tutors are online