Across
- 1. two lines that intersect at a right angle (90 degrees)
- 3. the point where a graph intersects the y-axis. it is the value of y when x is equal to zero (0,y)
- 4. the point where a graph intersects the x-axis. it is the value of x when y is equal to zero (x,0)
- 7. used to solve a system of equations by elimination one of the variables to obtain a new equations with only one variable
- 10. the system of equations intersect at single point, resulting in exactly one ordered pair that satisfies all of the equations in the system; the lines will have different slopes
- 11. a numerical or constant factor that is multiplied by a variable in an expression or equation
- 13. a symbol or letter representing an unknown quantity
Down
- 1. lines in a plane that never intersects, no matter how far they are extended in either direction
- 2. two or more linear equations that are solved simultaneously to find the values of the variables that satisfy all the equations in the system
- 5. the ordered pair that makes all of the equations in a system true
- 6. used to find the solution(s) to a system of equations by solving one equations for one variable and then substituting that expression into the other equations(s)
- 8. the system of equations do not intersect at any point resulting in parallel lines; there are no values that satisfy the system of equations; the lines will have the same slope but different y-intercept
- 9. the system of equations represent identical lines resulting in an enlimited number of solutions; the lines will have the same slope and y-intercept
- 12. used to solve a system of equations by graphing each equation on the coordinate plane and identifying the point(s) where the graph intersects, if they intersects; these points on intersection represent the solutions to the solutions to the system of equations