3x + 2y < 4
write the inequality:
3(3) + 2(-3) < 4
substitute 3 for x and -3 for y:
3 × 3 - 2 × 3
factor the expression:
3(3 - 2)
subtract the numbers:
3 × 1 < 4
calculate the product:
3 < 4
Yes 3 is less than 4. so, (3, -3) is a solution to an inequality.
