Topic Test Answers

From the graph shown below, what happens to the y- values as the negative x- values get closer to zero?

Given that , What is the value of f(x) when x = 2?

If y varies directly as x and y = 49 when x = 7, what is the value of y when x = 3?

Solve:

The variables x and y vary directly. Use the given values to write an equation that relates x and y. x = 20 y = 10 a. c. b. d. Please select the best answer from the choices provided

The intensity of a radio signal from the radio station varies inversely as the square of the distance from the station. Suppose intensity is 8000 units at a distance of 2 miles. What will the intensity be at a distance of 11 miles? Round your answer to the nearest unit.

State the relationship between the graphs of f(x) and g(x).

For the function defined by , What is the constant of proportionality?

Find the y-intercepts of the graph ?

From the graph shown below, what happens to the y- values as the positive x- values get closer to zero?

Explain why no part of the graph appears below the x-axis?

For the function defined by , What is the constant of proportionality?

Using the patterns of inverse variation, complete the following table if y is inversely proportional to the cube of x:x0.5126y648?0.037

Choose the equation that models the following statement: The pressure, P, of a given mass of a gas in a closed cylinder varies inversely as the volume, V, of the cylinder. a. P = kV c. b. d. Please select the best answer from the choices provided

For the function defined by , if x is doubled, what is the effect on y?

If 2.5 pounds of a certain grain cost $1.75, how much will 5.3 pounds of the grain cost?

What does the graph of an inverse variation look like?

If 7 sandwich rolls cost $1.54, how much will 30 rolls cost?

If 2 egg rolls cost $1.20, how much will 10 egg rolls cost?