Texas Algebra STAAR

4x+8y=20
-4x+2y=-30

• (-7,1)

• (2,-5)

• (-2,5)

• (7,-1)

Parallel Lines never intersect because...

• they have the same slopes. 

• they have the same y-intercept.

• they have different slopes.

• they have different y-intercepts. 

Erin is 3 years younger than twice Alex's age. Their ages combined are 33 years. How old are Alex and Erin. If x=Erin's age and y=Alex's age, choose the system that matches the situation.

• x + y = 33
  y = 2x - 3

• x + y = 33
  x = 2y - 3

• x + y = 33
  x = 3 - 2y

• x + y = 3
  x = 33 - 2y

Find the slope of the line that passes through the points (2, 4) and (6, 12)

• 1/2

• -1/2

• 2

• -2

Find the slope of the line.

• Undefined

• 0

• 1

• -1

What are the green dots called?

• axis of symmetry

• vertex

• parabola

• roots or x-intercepts

What is the green dot on the parabola called?

• maximum

• minumum

• roots

• zeros

Does this parabola have a maximum or minimum?

• Maximum

• Minimum

What are the x- intercepts?

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

Name the Solutions.

• No Solution

• x = -2, x = -6

• x = 0, x = -2

• x = 0, x= -6