Algebra 1 PC Review

• 4x - 2
• 4x + 2
• 4x - 2 + (1/3x - 1)
• 4x + 2 + (1/3x - 1)

Determine if y= x²+6x-4 is a polynomial

• True 

• False

Which equations are direct variation?

• H=25^x

• Y=100x

• 6= J/p

• C=2/r

What does the Direct Variation Equation look like?

• y= kx

• y = mx + b

• y = b

• y = x

Y varies directly with x, and y is 84 when x is 16. Which equation represents this situation?

• y=1344x

• y=100x

• y=5.25x

• y=4/21x

The number of hours to paint a house varies inversely with the number of painters working. A 2400-square foot house can be painted in 27 hours by 6 painters. How many painters would need to work in order to paint the house in 18 hours?

• 8 painters

• 10 painters

• 9 painters

• 11 painters

Y is directly proportional to the square of z and inversely proportional to w and x

• y=kz²/wx

• y=kz/wx

• y=wx/kx²

• y=wx/kz

In slope intercept form (y=mx+b) what is the "m"?

• The y-intercept

• The x-intercept

• The slope (rate of change)

• A point

Write the equation of the line that passes through the point (1, -1) and has a slope of -4.

• y = -4x + 3

• y = -4x - 3

• y = -4x + 5

• y = -4x - 5

The solution to the following equation is shown below in steps. Choose the best answer to complete the missing step: Given: 12 + 4(x+2) = 30 + 6x Step #1: 12 + 4x + 8 = 30 + 6x Step #2: ______________________ Step #3: -10 = 2x Step #4: x = -5

• 20 = 30 + 2x

• -20 - 2x = 30

• -2x = -10

• 20 + 4x = 6x