Which ordered pair is a solution of 3x - y < 20 ?

A.) (7,1)

B.) (5,-6)

C.) (8,0)

D.) (-1,-4)

E.) (10,5)

A.) (7,1)

B.) (5,-6)

C.) (8,0)

D.) (-1,-4)

E.) (10,5)

Substitute x and y values in, until a true statement is reached.

3x - y < 20

3(-1) - (-4) < 20 {substituted -1 for x and -4 for y}

-3 + 4 < 20 {simplified}

1 < 20 {added}

A true statement.

(-1,-4) is a solution to the inequality.

**Try (-1,-4)**3x - y < 20

3(-1) - (-4) < 20 {substituted -1 for x and -4 for y}

-3 + 4 < 20 {simplified}

1 < 20 {added}

A true statement.

(-1,-4) is a solution to the inequality.

**D.) (-1,-4)**__Ask Algebra House__