1. WARM UP WRITING EQUATIONS Write in slope-intercept form the equation of the line that passes through the given point and has the given slope. (Lesson 5.2) 1.(2, 3), m = -2 2.(3, 0), m = -4 3

2. WARM UP WRITING EQUATIONS Write in slope-intercept form the equation of the line that passes through the given point and has the given slope. (Lesson 5.2) 1.(2, 3), m = -2 2.(3, 0), m = -4 2

3. WARM UP WRITING EQUATIONS Write in slope-intercept form the equation of the line that passes through the given point and has the given slope. (Lesson 5.2) 1.(2, 3), m = -2 2.(3, 0), m = -4 1

4. WRITING EQUATIONS Write in slope-intercept form the equation of the line that passes through the given point and has the given slope. (Lesson 5.2) 1.(2, 3), m = -2 2.(3, 0), m = -4 WARM UP 0

5. 7.1 Graphing Linear Systems SOLVING A LINEAR SYSTEM USING GRAPH-AND-CHECK ①WRITE each equation in slope-intercept form. ②GRAPH both equations in the same coordinate plane. ③ESTIMATE the coordinates of the point of intersection. ④CHECK whether the coordinates give a solution by substituting them into each equation of the original linear system.

6. 7.1 Graphing Linear Systems EXAMPLE 2 EXAMPLE 2 GRAPH AND CHECK A LINEAR SYSTEM Use the graph to solve the solution of the linear system. x + y = -2 2x – 3y = -9 ①WRITE each equation in slope-intercept form.

7. 7.1 Graphing Linear Systems EXAMPLE 2 EXAMPLE 2 GRAPH AND CHECK A LINEAR SYSTEM Use the graph to solve the solution of the linear system. x + y = -2 2x – 3y = -9 ②GRAPH both Equations. 2x – 3y = -9 x + y = -2

8. 7.1 Graphing Linear Systems EXAMPLE 2 EXAMPLE 2 GRAPH AND CHECK A LINEAR SYSTEM Use the graph to solve the solution of the linear system. x + y = -2 2x – 3y = -9 ③ESTIMATE the coordinates of the point of intersection. 2x – 3y = -9 x + y = -2 (-3, 1)

9. 7.1 Graphing Linear Systems EXAMPLE 2 EXAMPLE 2 GRAPH AND CHECK A LINEAR SYSTEM Use the graph to solve the solution of the linear system. x + y = -2 2x – 3y = -9 ④CHECK whether (-3, 1) is a solution by substituting -3 for x and 1 for y in each of the original equations. 2x – 3y = -9 x + y = -2 (-3, 1)

10. 7.1 Graphing Linear Systems GRAPH-AND-CHECK to solve the linear system. 1.x - y = 5 2x + 3y = 0 CHECK POINT CERTIFIED

11. 7.1 Graphing Linear Systems Page 392-393 #7 - 24 Graph 16 - 24 CLASSWORK