Sections: 5-1,5-2,5-3,5-4,5-5,5-6,(skip 5-7)

###
constant of variation

(p.264) the variable "k", in the equation: y=kx, is the constant of variation

###
direct variation

(p. 264) the formula: y=kx is the direct variation equation

###
negative correlation

(p. 298) as the variable "x" increases the variable "y" decreases

###
parallel lines

(p. 292) lines that have the same slope

###
perpendicular lines

(p. 293) lines that intersect at right angles

###
point-slope form

(p. 286) y-y1=m(x-x1)

###
positive correlation

(p. 298) as the variable "x" increases, the variable "y" increases

###
rate of change

(p. 258 tells on average how a quantity is changing over time

###
rate of change

(p. 258) tells on average how a quantity is changing over time

###
slope

(p. 256) a number determinded by two points on the line

###
slope-intercept form

(p. 272) y=mx+b