Systems of equations: Substitution

What is the definition of a solution?

• A value that makes the equations greater

• A value that makes equations equal

• The x and y values that are the same

x = 4

y = x + 8

What is the solution?

• (12,4)

• (4,4)

• (4,12)

• (-4,-4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

When using the __________ method, you plug in a value into an equation to solve for another variable value.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

^{What is the solution?} 

• 1
• -2
• (1, 2)
• (1, -1)

Tags

CCSS.8.EE.C.8A

x = 3

y = 2x + 5

• (11,3)

• (3,11)

• No Solution

• (3,10)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

If you solved an equation and ended up with

-10= -10

What type of solution do you have?

Tags

CCSS.8.EE.C.7A

Parallel Lines never intersect because...

• they have the same slopes. 
• they have the same y-intercept.
• they have different slopes.
• they have different y-intercepts. 

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

How many solutions will this system have?

• No Solution
• Infinitely Many Solutions
• No Clue
• One solution

Tags

CCSS.8.EE.C.8B

What is the y-intercept of this graph?

• (0,1)
• (0,-2)
• (0,0)
• (0,3)

Tags

CCSS.HSF.IF.B.4

CCSS.HSS.ID.C.7

solve by substitution: y=3x+14
y=-4x

• y=3
• y=1
• y=2
• y=4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6