Question

y = 3x -4
Which value is incorrect on the table
X equals negative one Y equals -7
X equals 0 y equals -4
X equals two Y equals -2
X equals five Y equals 11

Answer 1

To check for correctness, we can substitute the values of \( x \) into the equation \( y = 3x - 4 \) and see if the corresponding \( y \) values match.

1. For \( x = -1 \):
\[
y = 3(-1) - 4 = -3 - 4 = -7 \quad \text{(Correct)}
\]

2. For \( x = 0 \):
\[
y = 3(0) - 4 = 0 - 4 = -4 \quad \text{(Correct)}
\]

3. For \( x = 2 \):
\[
y = 3(2) - 4 = 6 - 4 = 2 \quad \text{(Incorrect - should be } y = 2\text{)}
\]

4. For \( x = 5 \):
\[
y = 3(5) - 4 = 15 - 4 = 11 \quad \text{(Correct)}
\]

The incorrect value in the table is when \( x = 2 \), where the correct \( y \) value should be \( 2 \) instead of \( -2 \).