Solving Systems - Substitution

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

• Make sure both equations are in standard form.
• Make sure at least one equation is solved for one variable.
• Make sure both equations are in slope-intercept form.
• Make sure both equations can be solved.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is a "solution to a system of equations"?

• It's the point where both equations equal zero

• It's the point where graphs of both equations cross the y-axis

• It's the point that solves both equations at the same time

• It's the point where graphs of both equations cross the x-axis

What is the solution of the given system of equations?

• (1,2)

• (-1,0)

• No Solution

• Infinitely Many Solutions

What is the solution of the given system of equations?

• (3,1)

• (1,3)

• (-1,3)

• No Solution

How many solutions does the graph have?

• One solution

• No solution

• Infinite solutions

Tags

CCSS.8.EE.C.8A

Solve the following system of equations using substitution.

6x + y = -1

y = -3x - 4

• (3, 1)

• (1, 7)

• (-3, 1)

• (1, -7)

Solve the following system of equations using substitution.

3x + y = -5

6x + 2y = 10

• No Solution

• Infinitely Many Solutions

• (2,3)

• (6,-2)

Solve the following system of equations using substitution.

3x + 2y = 16

7x + y = 19

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)

Solve the system of equations.

• (-34, -17)

• (8, 4)

• (10, 20)

• No solution

• Infinite solutions

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6