Intro to Systems of Equations Substitution

What is the solution to the system?

• (0, 3)

• (1, -1)

• (-3, 1)

• (1, 3)

Tags

CCSS.8.EE.C.8B

What is the solution to a system of equations?

• It's the ordered pair where both equations equal zero

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

• It's the ordered pair (x, y) that makes both equations true.

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

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

A system has ____________ when the two equations coincide.

• One solution

• No solution

• Infinitely Many Solutions

Tags

CCSS.8.EE.C.8A

Coinciding lines have the...

• Same slopes, same y-intercepts

• Different slopes

• Same slope, different y-intercepts

Solve the system of equations using substitution:

-4x + 4y = 8

y = -2x - 10

• (-4, -2)

• (12, -34)

• (4, -18)

• (-2, -6)

• (-4, 6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve for x and y (Use Substitution)

y = 2x + 1

y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

• (1,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to this system? Solve by substitution.
y= 4x + 3
2x - 3y = 21

• (3,-9)

• (-3,-9)

• (-3,9)

• (0,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system using substitution.

• (1, 2)

• (4, 1)

• (2, -1)

• No Solution

Tags

CCSS.8.EE.C.8B

Solve using Substitution Method

y = -6

-3x - 6y = 24

• (6, 6)

• (6, -6)

• (4, -6)

• (-6, 4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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