Exam 4: Systems of Linear Equations and Inequalities

Solve the problem. -This chart shows the fees for an 18- hole round of golf for each of the last 5 years at a local municipal golf course. Write the information in the chart as a set of ordered pairs.

Solve the problem. -Suppose that sales of a particular brand of appliance satisfy the relationship y = 80x + 500, where y represents the number of sales in year x, with x = 0 corresponding to 1992. What does the ordered pair (13, 1540) mean in the context of the situation?

Tell whether or not the relation is a function. -{(1, - 7), (1, 6), (6, 1), (7, - 9), (12, - 4)}

Decide whether or not the ordered pair is a solution to the equation -3x + y = 14; (4, 2)

Graph the linear inequality --2x - 3y $\le$ 6

Decide whether or not the ordered pair is a solution to the equation -x + 7 = 0; (- 7, 5)

Graph the line through the given point with the given slope. -(1, - 2), undefined slope

Write the slope-intercept form of the equation for the line passing through the given pair of points. -(- 3, 1) and (7, - 8)

Solve the problem. -This chart shows the number of meals served in a restaurant during each of the past 4 months. Assume that the information in the chart defines a function with the name g. Find g(March).

Complete the graph by shading the correct region. -y $\ge$ x - 6

Complete the graph by shading the correct region. -x + y $\le$ 4

Solve by graphing. Label the axes and show where the solution is located on the graph. -Suppose y = mx + b is a mathematical model for actual time as a function of estimated time, where y represents actual time and x represents estimated time and m and b are constants. If m = 3.6 and b = - 1, find y when x is 15 min.

Determine whether the graphs of the equations are parallel lines, perpendicular lines, or neither. -3x - 8y = - 5 32x + 12y = - 5

Graph the linear equation. Give the x- and y- intercepts. -y = - 3

Graph the linear equation. -x = - 8

Graph the line through the given point with the given slope. -(- 6, - 8) , m =2/3

Find the slope of the line. -A line parallel to the graph of y - 4 = 6

Complete the graph by shading the correct region. -y + 4 < x

Describe the graph of the function f(x) = x + 3 if the domain is( 2, 3, 4, 5 ).

Complete the ordered pairs. Then graph the equation by plotting the points and drawing a line through them -?