Exam 3: Linear Equations With Two Variables

Atmospheric pressure (measured in atm) decreases by 11.5% for every 1000-meter increase in elevation. At sea level the atmospheric pressure is 1 atm. Which one of the following models the atmospheric pressure for 700-meter increases in elevation?

Find the x- intercept of the equation .

The model describes the population of Town A. Which one of the following written statements best describes this population?

Use the graph to find the equation of the line. Put the answer in form.

A graph of the equation will be a horizontal line.

Using the following table of a function that models exponential decay determine the one-year decay factor (rounded to the nearest hundredth).

State whether the line graphed is increasing decreasing or neither.

State whether the line graphed is increasing decreasing or neither.

The graph displays the number of students enrolled in mathematics class for the number of days since registration opened. Calculate the slope for the line and interpret its meaning.

Two lines are perpendicular if the two slopes are opposite reciprocals.

Find the slope of the line that goes through the points and .

Graph the equation .

State whether the line graphed is increasing decreasing or neither.

The model describes the amount of Krypton-91 remaining after x minutes. Which one of the following written statements best describes the behavior of Krypton-91?

The growth factor is 1.061.

Determine whether the equation is linear. If it is linear put it into slope-intercept form.

Determine the equation of the line by using the point-slope form. Points:

Find the slope of the line given in the graph.

For the function name the domain and name the range.

If the graph of a relationship passes the vertical line test the relationship is a function.