Slopes and Equations of Lines

What is the solution to this system of equations? Solve by substitution or graphing.

• (7, -8)

• (-7, 8)

• (-7, -8)

• (7, 8)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Intersecting lines have _____ solution(s).

• No

• One

• many

Tags

CCSS.8.EE.C.8A

Two equations that produce the same line have _____ solution(s).

• no

• one

• infinitely many

Tags

CCSS.8.EE.C.8A

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

• intersecting lines

• parallel lines

• skew lines

• intersecting lines

Tags

CCSS.8.EE.C.8A

How many solutions will this system have? 

• No solution

• One Solution

• I Don't Know

• Infinitely Many Solutions

Tags

CCSS.8.EE.C.8A

A line is perpendicular to y = 2x - 7.

What is the slope of the perpendicular line?

• -2

• 1/2

• -1/2

• 2

Tags

CCSS.8.EE.B.6

Write an equation in slope intercept form that is perpendicular to y = -3x + 4 and passes through the point (9,5).

• y = 3x - 32

• y = -3x + 22

• y = 1/3x - 8

• y = 1/3x + 2

Slopes of perpendicular lines are...

• opposite reciprocals

• opposites

• identical

• always negative

Tags

CCSS.8.EE.B.6

y = 3x +2
y = 3x - 3
These lines are...

• Parallel

• Perpendicular

• Neither

• The same line

Tags

CCSS.8.EE.C.8B

Which equation is perpendicular to: x = -5

• y = 1/5x

• y = -3

• y = -5x +3

• x = 4