Systems - graphing & elimination

Determine if (3, -2) is a solution for the system of equations.

y = -x + 7

y = 5x + 4

• yes

• no

What is the solution to this system?

• (1, -1)
• (-1, 1)
• (0, -2)
• (2, 0)

Tags

CCSS.8.EE.C.8B

What is the solution to the system?

• (0, 3)
• (1, -1)
• (-3, 1)
• (1, 3)

Tags

CCSS.8.EE.C.8B

What is the y-intercept of this line? y=2x-4

• 2

• -4

• 4

• -2

What is the slope of this line? y=4/3x+8

• 8

• 3

• -8

• 4/3

For a slope of 5: Instead of going up 5 and to the right 1 you can...

• go left 5 and down 1

• go down 5 and left 1

• go up 5 and left 1

• go down 5 and right 1

Rearrange the equation to slope-intercept form. 4x+2y=12

• y=-2x+6

• y=-4x+12

• y=2x+6

• y=-4x-12

2x + 3y = 12

4x = -7y - 4

Rearrange the second equation so that it is in the same form as the first

• -4x-7y = -4

• 4x-7y = 4

• -4x+7y = 4

• 4x+7y = -4

Rearrange the second equation so that it is in the same form as the first

2y = 3x + 7

8y + x = 3

• x + 8y = 3

• 8y = -x + 3

• 8y + 3 = x

• 8y = x + 3

Solve using Elimination Method:

x - y = 11

2x + y = 19

• (10,-1)

• (-1,10)

• (3,-4)

• (6,7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6