Exam 4: Graphs of Linear Equations

Write the word or phrase that best completes each statement or answers the question. Show that the two ordered pairs are solutions to the given equation. Then use the graph of the two points to determine another solution. Answers may vary. -y = - 2; (4, 0), (-4, -4)

List the quadrant(s) in which the given point is located. -(-10, -20)

Find the slope of the line going through the pair of points. -(-2, 1), (-4, 5)

List the quadrant(s) in which the given point is located. -The first coordinate is positive.

Graph. -x = -2

Find the coordinates of the y-intercept for the given equation. -x + 2y = 3

Solve the problem. -The value V, in dollars, of a shopkeeper's inventory software program is given by V = -30t + 700, where t is the number of years since the shopkeeper first bought the program. Graph the equation and then use the graph to Estimate the value of the software after 5 years.

Graph. -y = 2

Graph the linear equation. --x + 8y = -3

Graph the linear equation. --4x + y = 0

Find the coordinates of the y-intercept for the given equation. -y = x + 4

Graph. -4y = 10

Find the coordinates of the labeled points. -

Write the word or phrase that best completes each statement or answers the question. Plot the ordered pairs on the rectangular coordinate system provided. -A(0, 2), B (0, -4)

Write the word or phrase that best completes each statement or answers the question. Show that the two ordered pairs are solutions to the given equation. Then use the graph of the two points to determine another solution. Answers may vary. -6x - 2y = 4; (0, -2), (3, 7)

Determine whether the given ordered pair is a solution of the equation. -x + y = 12; (7, 5)

Find the coordinates of the y-intercept and the x-intercept, in that order. -5y - 11 = 2x

Find the slope of the line. -3x - 4y = -31

Graph the line containing the given pair of points and find the slope. -(2, -4) (-1, 2)

Find the slope of the line. -