Solving Systems by Graphing Review

These two lines intersect at _____.

• (4, -2)
• (4, 2)
• (-2, 4) 
• No solution

Tags

CCSS.8.EE.C.8B

The solution is:

• (4, 3)
• (3, 4)
• (-4, 3)
• No solution

Tags

CCSS.8.EE.C.8B

What is the solution to the system?

• (0, 3)
• (1, -1)
• (-3, 1)
• (1, 3)

Tags

CCSS.8.EE.C.8B

How can you tell if a point is a solution to a system?

• It makes the first equation true.
• The (x,y) coordinates satisfy both equations
• It makes logical sense
• It makes neither equation negative

What is the first step in solving a system by graphing?

• Write both linear equations in slope-intercept form
• Get x by itself
• Compare the slopes of both equations
• Write both equations in standard form

Tags

CCSS.8.EE.C.8B

The solution to a system of equations is any ordered pair that makes both equations true. 

• TRUE
• FALSE

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What are the steps for graphing a line?

• 1. Plot y-intercept
  2. count slope ratio plot second point
  3. Draw the line.
• 1. Make a table
  2. Plot slope
  3. Draw line
• 1. Plot two points
  2. Check slope
  3. Draw line
• 1. Draw line
  2. Hope it is right

Slope = 4  Point (-2, 1)

• y = 4x +9
• y=4x-7
• y=4x+7
• y=4x-9

Slope = 3/5  Point (10, -15)

• y=3/5x-21
• y=3/5x-9
• y=3/5x-35
• y=3/5x

Convert equation from standard form to slope intercept form.
x - 7y = -21

• y = -1/7x - 3
• y = 1/7x - 3
• y = 1/7x + 3
• y = -1/7x + 3

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3