3.4-3.5 Test

Which equation can be represented by the graph?

• 4x + y = 3
• -4x + y = 3
• -x + 4y = 3
• x - 4y = 3

What does "m" represent in y=mx+b?

• y-intercept
• slope
• macaroni
• nothing

What does 'b" represent in y=mx=b

• y-intercept
• macaroni
• nothing
• slope

Which represents slope in y=4x+3

• 3
• 4x
• 4
• x

What is the y-intercept in the equation  y = -4x - 5

• -4
• -4x
• 5
• -5

Which equation has a slope of 2/3 and a y-intercept of -3?

• y = 3x + 2/3
• y = 2/3x - 3
• y = 2/3x + 3
• y = -3x + 2/3

Find the slope of a line given by the points (-3,7) (-3,2)

• 0
• Undefined
• -7
• 9

Find the slope of a line given the points (2,1) (5,3)

• -⅔
• ⅔
• -3/2
• 3/2

An electrician charges $90 per hour plus a $50 travelling fee. Which equation represents the total cost of a repair by an electrician after x hours?

• y = 50 - 90x
• y = 90x + 50
• y = -50x + 90
• y = -90 - 50x

A family buys a case of water with 48 bottles and drinks 5 bottles per day. Which equation shows the number of bottles left after x days?

• y = 48x + 5
• y = -5 + 48x
• y = -5x - 48
• y = 48 - 5x