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Example 1
The solution of the equation $-5x+6=12$ falls between the numbers
- $-3$ and $-2$
- $-2$ and $-1$
- $-1$ and $0$
- $5$ and $6$
- $8$ and $9$
Solution
- We need to solve the given equation before we can find the interval. Hence
$-5x+6=12$ is equivalent to $-5x=6$ which gives $x=-\dfrac{6}{5}=-1.2$
- The solution $-1.2$ is between $-2$ and $-1$.
Answer B
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