Equations Based on Graphs

What is the equation of the line?

• y = 20x

• y = x + 20

• y = 2x

• y = x + 2

Is the graph proportional or non proportional?

• proportional

• non proportional

• both

• neither

What is the function of the table?

• y=3x+1

• y=4x-2

• y=x+1

• y=x+7

Write an equation for this relationship.

• y=18x

• y=18.50x

• y=22.50x

• y=22x

Solve the system of equations. Hint: Graph the equations!
y = 4x+1
3x + 2y = 13

• (1, 5)

• (5, 1)

• (0.25, 2)

• ∅

How many solutions will this system have? 

• No solution

• One Solution

• I Don't Know

• Infinitely Many Solutions

If a system of linear equations has one solution, what does this mean about the two lines?

• Parallel lines

• the same line

• Intersecting lines

What is the solution to this system?

• One Solution

• No solution

• Infinitely Many Solutions

Which system of inequalities is shown?

• y ≥ -x - 1
  y < x + 4

• y < -x - 1
   y ≥ x + 4

• y > -x - 1
  y ≥ x + 4

• y > -x - 1
  y ≥ x + 3

The solution to this system is...

• (4, -2)

• (4, 2)

• (-2, 4) 

• (-4, -2)