Linear Equations

What does the "b" stand for in y=mx+b?

• slope
• x-intercept
• y-intercept

What is the slope of the line passing through the points (3,5) and (-1,7)?

• -1/2
• -1
• -2
• 1/2

What letter represents the slope of a line in the equation y = mx + b?

• y
• m
• x
• b

What is the equation for the line with a slope of 7 and passes through (0,1)?

• y = -7x + 1
• y = 7x + 1
• y = -1/7x - 1
• y = -1/7x + 1

Give the equation for the graph

• y = 5x - 3
• y = 4x + 2
• y =-2x + 5
• y = - 2x + 4

If y varies directly with x, and y = -20 when x = 3, what is y when x = 15?

• 100

• -2.25

• 2.25

• -100

If y varies directly with x, and y = 8 when x = 3, what is x when y = -56?

• 21

• -21

• -149.33

• 149.33

If y varies directly with x, and y = 8 when x = -4, what is x when y = -48?

• -96

• 24

• 96

• -24

Is this a direct variation?
y=2x

• yes
• no

What does the Direct Variation Equation look like?

• y= kx
• y = mx + b
• y = b
• y = x