Chapter 3: Equations in Two Variables

What is a constant rate of change?

• The rate of change between any two points in a linear relationship that is the same or constant.

• The linear relationship that has a straight line graph.

• The same thing as a linear relationship.

• A term without a variable.

Tags

CCSS.HSF-LE.A.1B

A mountain road rises 20 feet for every horizontal change of 100 feet. What is the slope of the road?

• 1/4

• 1 1/3

• 1/3

• 1/2

• 1/5

Tags

CCSS.8.EE.B.5

What is the equation y=mx used for?

• Slope Intercept form

• To find the Y intercept

• Direct variation

• To find slope

Tags

CCSS.8.EE.B.5

State the slope and y intercept in this equation-

y=(-1x)-25

• y int= 25

  Slope= (-1)

• y int=(-25)

  Slope=(-1x)

• y int= (-52)

  Slope=(-1)

• y int= (-25)

  Slope=(-1)

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

State the y-intercept of the function 3x + 4y = 12.

• -3

• 4

• -8

• 3

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is the following equation called-

y-y₁=m(x-x₁)

• Slope intercept form.

• Point slope form.

• y intercept form.

Which graph shows the solution to the system of equations y = 2x − 3 and y=2/3x+1?

(2/3 is a fraction, not division.)

• 
• 
• 
• 

Tags

CCSS.8.EE.C.8B

Solve the sytems of equations by substitution:

y = −x − 3

y = −2

• (-2,-1)

• (-1,-3

• (-1,-2)

• (-4,-2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is a linear equation?

• An equation that cannot be graphed

• An equation with a graph that is a straight line

• An equation with a graph that curves.