4.9 Substitution Day 1

What is the solution to the following system:

^{y = 5x}

^{3x + y = 24}

• ^{(15, 3)}

• ^{(3, 5)}

• ^{(3, 15)}

• ^{(5, 3)}

What is the solution to the following system?

^{x - y = 6}

^{x = 11}

• (11, 5)

• (55, 5)

• (11, 11)

• (5, 55)

What is the solution to the following system?

^{x = -2y}

^{3x + 4y = -8}

• (-2, -8)

• (4, 3)

• (-2, 4)

• (-8, 4)

What is the solution to the following system?

^{2x + 7y = 3}

^{y = -1}

• (5, -1)

• (5, -5)

• ^{(5/7, -1)}

• (-1, 5)

What is the solution to the following system?

^{y = 5}

^{-3x + 4y = 8}

• (5, 7)

• (4, 5)

• (-3, 5)

• (-4, -20)