1. 4.2
Graph linear equations in a
coordinate plane

2. Linear Equation
• An equation whose graph is a line.

3. Standard form of a linear
equation
• ax+by=c

4. Solutions to linear equations
• Ordered pairs that result in true statements
when substituted into a linear equation.

6. Graphing linear equations
• Create a domain of at least three values.
• Choose values that are convenient.
• Solve the equation for those values.

7. Graph a linear equation
• -2x + y = -3

8. y=b and x=a

9. Vertical Line Test
• A function is represented by a graph in
which a vertical line will not pass through
more than one point.
• Is y=b a function?
• Is x=a a function?

10. Graph the Equation:
• y = 3x - 2

11. Graph the Equation
• y = 2.5

12. Graph the Equation
• x = -4