Graph/Sub Method Practice Quiz

The solution (x, y) to a system of equations is the point where they...?

• Run off the graph

• Don't touch

• Intersect

Tags

CCSS.8.EE.C.8A

Solve the system of equations by substitution.

y = -4x + 5

y = 3x - 16

• (-3, -25)

• (3,-7)

• (11, 17)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = -6

-3x - 6y = 24

• (6, 6)

• (6, -6)

• (4, -6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution?

• (1, -1)

• (-1, 1)

• (0, -2)

Tags

CCSS.8.EE.C.8B

This system has _____ solutions

• 0
• 1
• 2
• Infinitely many

Tags

CCSS.8.EE.C.8B

Solve by substitution:

y = 3x + 14

y = -4x

• y=3

• y=1

• y= - 2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

The first step in solving using the substitution method is __________.

• get x by itself

• get y by itself

• get either variable by itself in one equation

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

How many solutions will this system have?

• No Solution

• Infinitely Many Solutions

• One solution

Tags

CCSS.8.EE.C.8B

If a system of equations has no solution, what does the graph look like?

• intersecting lines

• parallel lines

• skew lines

Tags

CCSS.8.EE.C.8A

Parallel Lines never intersect because...

• they have the same slopes.

• they have the same y-intercept.

• they have different slopes.

Tags

CCSS.HSF-IF.C.7A