Name __________________________ 4.1-4.3 Vocabulary Review Matching: _____ 1. coordinate plane A. The vertical number line in a coordinate plane. _____ 2. ordered pair B. When y is isolated on one side of a linear equation. _____ 3. function form C. The first number in an ordered pair. _____ 4. solution of a linear equation D. The y-coordinate of a point where a graph crosses the y-axis. _____ 5. graph of a linear equation E. An ordered pair that makes the linear equation true. _____ 6. x-axis F. The horizontal number line in a coordinate plane. _____ 7. y-axis G. The set of all points that are solutions to a linear equation. _____ 8. x-coordinate H. Formed by two real number lines that intersect at a right angle. _____ 9. y-coordinate I. A pair of numbers used to identify a point on a coordinate plane. _____ 10. x-intercept J. The x-coordinate of a point where a graph crosses the x-axis. _____ 11. y-intercept K. The second number in an ordered pair. Use the coordinate plane to the right to answer #12-16: 12. Label the four quadrants. 13. Label the x-axis. 14. Label the y-axis. 15. Using an ordered pair, label the origin. 16. Plot the point (5, -3). 17. What quadrant would the point (-4, 9) be in? 18. What is true of all x-intercepts? 19. What is true of all y-intercepts? 20. What kind of lines will have no x-intercept? Name ________________________ 4.1 – 4.3 Review 1) Plot and label the points A (3,-8) B (0,3) C (-7, -2) on the coordinate plane below. 2) Find two solutions for the following equation. 1 y x7 8 3) Rewrite the following equation in function form. y ( x 3) 4) Rewrite the following equation in function form. 14 6 y 7 x 5) Is the point (3, -4) on the graph of the following equation? Verify algebraically. 5x 3 y 3 Graph the equations and name any two points on the line. 6) 8) y 3 7) 3 y 2 x 12 Find the x-intercept and the y-intercept of the following equation then graph the equation. Label the points where the line crosses each axis. 5 x 25 y 50 9) The Spirit Team is selling t-shirts and sweatshirts for a fundraiser. The t-shirts sell for $12, and the sweatshirts sell for $30. Their goal is to raise $900. a. Write an algebraic model for the situation. Use x to represent the t-shirts and y to represent the sweatshirts. b. Find the x-intercept and the y-intercept, and tell what each represents. c. Graph the linear equation. d. Rewrite the equation in function form. e. Use the function to find the number of sweatshirts sold if 40 t-shirts were sold.