Linear Functions, Linear Equations, Systems and Inequalities

Which of the following equations match the given graph?

• y ≥ 2/5x + 1
• y ≥ -2/5x + 1
• y≤  2/5x + 1
• y ≥ -2/5x - 1

How can I tell if an inequality will have a solid line?

• It has an equal sign.
• The symbol is greater than.
• The symbol has "or equal to."
• You just guess.

Do I need to flip my sign?
2x - 3y  ≥ 12

• Yes
• No

Consider the function y<2x+3. Which is true?

• The line would be solid with shading above.
• The line would be dashed with shading above.
• The line would be solid with shading below.
• None of these.

Which of the following equations match the given graph?

• y ≤ 2x - 4
• y ≥ 2x - 4
• y < 2x - 4
• y > 2x - 4

Which point is a solution of
-2x + y  ≤ -2

• (0, 0)
• (1, -1)
• (1, 2)
• (-3, 1)

What is the slope between the points
(-3, -4) & (7, 6)?

• 0
• Undefined
• -1
• 1

Write the equation for the line in slope-intercept form.

• y= -1x+3
• y= 4x+3
• y=(1/4)x+3
• y= -4x+3

Find the x and y intercepts
4x - 5y = 40

• x intercept is 10 
  y intercept is 8
• x intercept is 10
  y intercept is 20
• x intercept is 8
  y intercept is 10
• x intercept is 10
  y intercept is -8

Find the slope of the line.

• -2
• 2
• -1
• 1