GRADE 8 Linear Equations in Two Variables

What is the standard form of a linear equation in two variables?

• x + y = 0

• Axy = C

• Ax + By = C

• y = mx + b

Which of the following is NOT a characteristic of a linear equation in two variables?

• It has two variables.

• The degree of the equation is one.

• It can have a variable in the denominator.

• There is no variable inside a radical sign.

In the equation Ax + By = C, what does C represent?

• Coefficient

• Variable

• Constant

• Slope

If A = 3 and B = 4 in the equation 3x + 4y = 12, what is the value of C?

• 16

• 12

• 7

• 0

Which equation represents a linear relationship?

• 3x + 2y = 6

• y = x² + 3

Which of the following equations is in standard form?

• 2x + 3y = 6

• y = 2x + 3

• 3y = 4x - 1

• x - 5 = y

If the equation is 5x + 4y = 20, what is the value of y when x = 0?

• 5

• 4

• 20

• 0

Which of the following statements is true about linear equations?

• They can have variables inside radical signs.

• They can be written in the form Ax + By = C.

• They can have more than one variable in each term.

• They can have variables with exponents greater than one.

What is the value of x in the equation 2x + 3y = 12 when y = 2?

• 6

• 3

• 4

• 5

If the equation is 4y = 8 - 5x, what is the value of y when x = 0?

• 2

• 1

• 4

• 0