Mid-Chapter Quiz: 7.1 - 7.3

• Direct

• Inverse

• Neither

Tell whether x and y show direct variation, inverse variation, or neither. (a)  

• Direct
• Inverse
• Neither

The variables x and y vary inversely. Use the given values to write an equation relating x and y. Then find y when x = 3. ​ ​ (a)   ​ (b)  

• The graph of g is a reflection in the y-axis and lies farther from the axes. The graphs have the same asymptotes, domain, and range.

• The graph of g is a reflection in the x-axis and lie closer to the axes. The graphs have the same asymptotes, domain, and range.

• The graph of g is a reflection in the x-axis and lies farther from the axes. The graphs have the same asymptotes, domain, and range.

• The graph of g is a reflection in the y-axis and lies closer to the axes. The graphs have different asymptotes, domains, and ranges.

The graph of g is a reflection in the x-axis of the graph of f. What was the original graph for f ?

• The graph of f would have been in the 2nd and 4th quadrant.

• The graph of f would have been closer to the axes.

• The graph of f would have been farther away from the axes.

• The graph of f would have been identical to the graph of g.

Mathematical Equivalence

ON

• Domain: all real numbers except -2.

  Range: all real numbers.

Mathematical Equivalence

ON

Match the following

• Inverse Variation

• Direct Variation

• Neither