y = 2x + 3, 3x + y = 18

Frequently Asked Questions

• Solve using the substitution method of \({ y = 2x + 3, 3x + y = 18 }\)

  

  $$\left(x,y\right)=\left(3,9\right)$$

• Solve using the elimination method of \({ y = 2x + 3, 3x + y = 18 }\)

  

  $$\left(x,y\right)=\left(3,9\right)$$

• Solve using the Gauss-Jordan method of \({ y = 2x + 3, 3x + y = 18 }\)

  

  $$\left(x,y\right)=\left(3,9\right)$$

• Solve using the Cramer's rule of \({ y = 2x + 3, 3x + y = 18 }\)

  

  $$\left(x,y\right)=\left(3,9\right)$$

• Determine whether lines are parallel, perpendicular, or neither of \({ y = 2x + 3, 3x + y = 18 }\)

  

  $$\text{Neither parallel nor perpendicular}$$