# MATH 141 Week in review 1 - WIR Math 166-copyright Joe...

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WIR Math 166-copyright Joe Kahlig, 05BPage 1Week in Review # 1Section 1.1 and 1.2: Graphs and Linesx and y axis, originordered pair: (x,y)distance formulad=q(x2-x1)2+ (y2-y1)2slope formulam=y2-y1x2-x1equations of linesslope intercept:y=mx+bpoint slope:y-y1=m(x=x1)Horizontal line thru the point (a,b) isy=bVertical line thru the point (a,b) isx=aSlopes of parallel lines are equal.Slopes of perpendicular lines are negative reciprocals.1. Which point, A(3,7) or B(9, 22), is closer to the point C(8,14)?2. Find the equation of the line thru the point C(8,14) that is parallel to the line throughpoints A(3,7) and B(9, 22).3. Find the equation of the line thru (7,10) and perpendicular to 7x+ 4y= 214. Find the equation of the line that crosses the x-axis at 7 and the y-axis at-8
WIR Math 166-copyright Joe Kahlig, 05BPage 25. Find the value(s) ofaso that the line thru the points B(a, 1) and C(2, 5) is perpen-dicular to the line thru the points D(1, 2) and E(4, a+2).

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Term
Spring
Professor
JillZarestky
Tags
Math, Economic equilibrium, Joe Kahlig, Math 166 copyright Joe, 166 copyright Joe Kahlig, WIR Math
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