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Graphing Linear Equations
4.2
p. 210
A solution to an equation is an ordered
pair (x, y) that makes the equation true.
A solution to an equation is an ordered
pair (x, y) that makes the equation true.
The graph of an equation is the set of...
A solution to an equation is an ordered
pair (x, y) that makes the equation true.
The graph of an equation is the set of...
Graphing an Equation
1. Rewrite the equation by solving for y.
Graphing an Equation
1. Rewrite the equation by solving for y.
2. Choose a few values for x and make
an input/output table.
Graphing an Equation
1. Rewrite the equation by solving for y.
2. Choose a few values for x and make
an input/output table...
Graphing an Equation
1. Rewrite the equation by solving for y.
2. Choose a few values for x and make
an input/output table...
Horizontal and Vertical lines
 The graph of y = b
is a horizontal line.
 “b” means any
number.
y = 2
Horizontal and Vertical lines
 The graph of x = a is
a vertical line.
 “a” means any
number.
x = - 3
Horizontal and Vertical lines
 What is the “x” value
for any point on the
line x = -3? x = - 3
Intercepts
4.3
Intercepts
 The x-intercept is
the point where a
graph crosses the
x-axis.
Intercepts
 The x-intercept is
the point where a
graph crosses the
x-axis.
 The y-intercept is
the point where a
graph c...
Finding Intercepts
To find the x-intercept of a graph, plug
in y=0 and solve for x.
Finding Intercepts
To find the x-intercept of a graph, plug
in y=0 and solve for x.
To find the y-intercept of a graph, ...
4.2,4.3 graphing
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4.2,4.3 graphing

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4.2 and 4.3 slideshow

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4.2,4.3 graphing

  1. 1. Graphing Linear Equations 4.2 p. 210
  2. 2. A solution to an equation is an ordered pair (x, y) that makes the equation true.
  3. 3. A solution to an equation is an ordered pair (x, y) that makes the equation true. The graph of an equation is the set of all the solutions.
  4. 4. A solution to an equation is an ordered pair (x, y) that makes the equation true. The graph of an equation is the set of all the solutions. The graph of a linear equation is a line.
  5. 5. Graphing an Equation 1. Rewrite the equation by solving for y.
  6. 6. Graphing an Equation 1. Rewrite the equation by solving for y. 2. Choose a few values for x and make an input/output table.
  7. 7. Graphing an Equation 1. Rewrite the equation by solving for y. 2. Choose a few values for x and make an input/output table. 3. Plot each ordered pair.
  8. 8. Graphing an Equation 1. Rewrite the equation by solving for y. 2. Choose a few values for x and make an input/output table. 3. Plot each ordered pair. 4. Connect the points with a straight line.
  9. 9. Horizontal and Vertical lines  The graph of y = b is a horizontal line.  “b” means any number. y = 2
  10. 10. Horizontal and Vertical lines  The graph of x = a is a vertical line.  “a” means any number. x = - 3
  11. 11. Horizontal and Vertical lines  What is the “x” value for any point on the line x = -3? x = - 3
  12. 12. Intercepts 4.3
  13. 13. Intercepts  The x-intercept is the point where a graph crosses the x-axis.
  14. 14. Intercepts  The x-intercept is the point where a graph crosses the x-axis.  The y-intercept is the point where a graph crosses the y-axis.
  15. 15. Finding Intercepts To find the x-intercept of a graph, plug in y=0 and solve for x.
  16. 16. Finding Intercepts To find the x-intercept of a graph, plug in y=0 and solve for x. To find the y-intercept of a graph, plug in x=0 and solve for y.

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