Understanding Linear Equations

What is a characteristic feature of a linear equation on a graph?

• It forms a zigzag pattern.

• It forms a parabola.

• It forms a circle.

• It forms a straight line.

What do we call the solutions to a linear equation?

• Line intersections

• Equation roots

• Coordinate pairs

• Graph points

How many points exist between any two points on a line?

• None

• Exactly one

• A finite number

• An infinite number

What does it mean when a line covers every number on the x-axis?

• The line is vertical.

• The line is horizontal.

• The line extends from negative to positive infinity.

• The line is a parabola.

How can you find a solution to a linear equation without using a graph?

• By guessing the values

• By substituting a random x value into the equation

• By drawing the line on paper

• By using a calculator

If you substitute x = 5 into the equation y = 3x + 7, what is the value of y?

• 20

• 15

• 22

• 18

What is the y-value for the equation y = -14, regardless of x?

• 14

• 0

• -14

• Depends on x

In the equation y = 2x + 5, what is the y-value when x = 6?

• 15

• 17

• 12

• 11

What happens to the y-value in the equation y = 3.5x + 20 when x = 7?

• y = 44.5

• y = 24.5

• y = 54.5

• y = 34.5

What is the result of substituting x = 3 into the equation y = 7x?

• y = 7

• y = 21

• y = 10

• y = 14