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# chapter3

### Chapter3

Slope-intercept form Is an equation for a line. EQ)y=mx+b or f(x)=mx+b
Linear function Is a function with an equation of the form y=mx+b
Theorem If 2 lines have the same slope,then they are parallel.
Linear combination All variables are to the first power and are not multipulied or divided by each other. EX)20P+32L
Standard form of an equation for a line EQ)Ax+By=C when A and B are not both zero. EX)A=0.2 and B=0.3 eqals the equation 0.2x+0.3y=9
Oblique lines Only oblique and horizontal lines can be written in slope-intercept form. eq)Ax+By=C(A can not equal 0 and neither can B.
Horizontal lines EQ)y=k slope=0
Vertical lines EQ)x=h slope undefined
Point-slope Theorem If a line contains (x1,y1) and has slope m,then it has equation y-y1=m(x-x1).
Arithmetic sequence A sequence with a constant difference of 3000 between successive terms. EQ)(nth term of an arithmetic sequence)an=a1+(n-1)d
Greatest-integer symbol [x]=the greatest integer less than or equal to x.
Created by: kaleighbrown