Solving Systems of Equations 2

What are the different ways to solve systems of equations?

• Substitution method

• Elimination Method

• Desmos

• type writer

How many solutions will this system have? 

• No solution
• One Solution
• I Don't Know
• Infinitely Many Solutions

Tags

CCSS.8.EE.C.8A

When you graph the exact same equation twice,

• you will have no solution. 
• you will have one solution.
• you will have infinite solutions. 
• you will graph a giraffe. 

Tags

CCSS.8.EE.C.8A

What is the best method to use?

−4x − 2y = −12

4x + 8y = −24

• Type Writer

• Substitution because a variable is defined

• Elimination because the equations are in standard form.

Solve for x and y
5x + 3y = 7
y = 4

• (4,1)
• (4,-1)
• (1,4)
• (-1,4)

Tags

CCSS.HSA.REI.C.9

Solve for x and y
2x − 3y = −1
 y = x − 1

• (-2,-3)
• (0,-1)
• (3,4)
• (4,3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the best method do you use?

y = 6x − 11

−2x − 3y = −7

• Type Writer

• Substitution because a variable is defined

• Elimination because both equations are in standard form.

7x + y = -20
y = 3x + 10

• (-3, 1)
• (-1, -3)
• (-3,-7)
• (-1,7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (3,-1)
• (-3,-1)
• (1,2)
• (-1,2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the following system by graphing.  What is the solution?

• Infinite number of solutions
• (3, 3)
• (3, -3)
• (-3, 3)

Tags

CCSS.8.EE.C.8B