CHAPTER 11 / ESSENTIAL ALGEBRA 2 SKILLS 423
Concept Review 4: Variation
- What equation is equivalent to the statement y varies directly as the square of x?
- If yvaries inversely as x, then the ____ of xand yis a constant.
- If yvaries directly as x, then the ____ of xand yis a constant.
- Describe the features of the graph of a direct variation function.
- If wvaries directly as v^3 and w= 16 when v= 2 , what is the value of wwhen v= 3?
- If yvaries inversely as the square of x, then what will be the effect on yif the value of xis doubled?
- The variable avaries inversely as b.If b= 0.5 when a= 32, then for how many ordered pairs (a, b) are both
aand bpositive integers? - If xvaries directly as the square root of yand directly as z, and if x= 16 when y= 64 and z= 2, what is the
value of zwhen y= 36 and x= 60?