Alg I Staar Review 5-20-21

-4x-2y=-12
4x+8y=-24

• (5,6)
• (6,-6)
• (6,-2)
• (4,-3)

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

• (-7,1)
• (2,-5)
• (-2,5)
• (7,-1)

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.

• Undefined
• 0
• 1
• -1

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

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

How many roots does this parabola have? 

• 3
• 2
• 0
• 1

Michael is solving the numerical expression below.

5[2 + (9 X 5)] - 45

Which is the first step that Michael would take to solve this expression?

• 5 X 2

• 2 + 9

• 9 X 5

• 45 - 5