13.2 - Set 1 - Review

Match the following square roots their simple radical form.

• 7

• 8

What kind of function does this seem to be?

• Mathematical function
• Linear function
• Exponential function
• Direct Variation

What is the y-intercept of the line in the graph?

• The y-intercept is the value of y when x=0.

What does the y-intercept mean in terms of the temperature of the lake?

Answer explanation

At the surface of the lake, the temperature is 15 degrees Celsius.

What is the slope of the line in the graph?

What does the slope mean in terms of how the temperature changes as the depth increases?

Write an equation for the line.