Circle the linear equations in one variable in the answer space.

Here's a detailed breakdown for question 2.

2. Bulatkan persamaan linear dalam satu pemboleh ubah pada ruang jawapan.
Circle the linear equations in one variable in the answer space.

A linear equation in one variable must meet two criteria:

1. It contains only one type of variable.
2. The highest power of that variable is 1.

Let's check each expression:

• $10 - 7x = -0.5$: This has one variable ($x$) with a power of 1. ✅
• $5 + \frac{2w}{3} = 1$: This has one variable ($w$) with a power of 1. ✅
• $\frac{1}{2r} - 3 = r$: This can be written as $\frac{1}{2}r^{-1} - 3 = r$. Since $r$ has a power of $-1$, it is not linear. ❌
• $4g + g^2 = 2$: This has one variable ($g$), but the highest power is 2 ($g^2$), so it is not linear. ❌
• $y + 4 = x$: This has two different variables ($y$ and $x$), so it is not a linear equation in one variable. ❌
• $6 + 4b = 2$: This has one variable ($b$) with a power of 1. ✅
• $1 - b^2 = b$: This has one variable ($b$), but the highest power is 2 ($b^2$), so it is not linear. ❌
• $2t - 3 = s$: This has two different variables ($t$ and $s$), so it is not a linear equation in one variable. ❌
• $4h - 2 = -3h$: This has one variable ($h$) with a power of 1. ✅
• $4 - vw = 6$: This has two different variables ($v$ and $w$) and they are multiplied ($vw$), which means it is not linear. ❌

The linear equations in one variable to be circled are:

• $\boxed{10 - 7x = -0.5}$
• $\boxed{5 + \frac{2w}{3} = 1}$
• $\boxed{6 + 4b = 2}$
• $\boxed{4h - 2 = -3h}$