think! Mathematics Textbook Secondary 3 (8th Edition) solutions
Ex 1C
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Solutions
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think! Mathematics Textbook Secondary 3 (8th Edition) solutions
Please email me if you spot any mistakes or have any questions.
Click to display or to hide
(i)
| x | -1 | 0 | 1 | 2 | 3 | 4 |
|---|---|---|---|---|---|---|
| y | 8 | 1 | -2 | -1 | 4 | 13 |
(ii)
(iii) Look for the x-intercepts of the graph
\begin{align} \text{From graph, } & x = 0.2 \text{ or } 2.3 \end{align}
(i)
| x | -3 | -2 | -1 | 0 | 1 | 2 |
|---|---|---|---|---|---|---|
| y | -5 | 5 | 9 | 7 | -1 | -15 |
(ii)
(iii) Look for the x-intercepts of the graph
\begin{align} \text{From graph, } & x = -2.6 \text{ or } 0.9 \end{align}
(i)
| x | -5 | -4 | -3 | -2 | -1 | 0 |
|---|---|---|---|---|---|---|
| y | 4 | 1 | 0 | 1 | 4 | 9 |
(ii)
(iii) Look for the x-intercept(s) of the graph
\begin{align} \text{From graph, } & x = -3 \end{align}
(i)
| x | -3 | -2 | -1 | 0 | 1 | 2 |
|---|---|---|---|---|---|---|
| y | 10 | -1 | -6 | -5 | 2 | 15 |
(ii) Look for the x-intercepts of the graph
\begin{align} \text{From graph, } & x = -2.1 \text{ or } 0.8 \end{align}
| x | -4 | -3 | -2 | -1 | 0 | 1 | 2 |
|---|---|---|---|---|---|---|---|
| y | -3 | 2 | 5 | 6 | 5 | 2 | -3 |
\begin{align} \text{From graph, } & x = -3.5 \text{ or } 1.5 \end{align}
(i)
| x | -4 | -3 | -2 | -1 | 0 | 1 | 2 |
|---|---|---|---|---|---|---|---|
| y | 25 | 9 | 1 | 1 | 9 | 25 | 49 |
(ii) Look for the x-intercept(s) of the graph
\begin{align} \text{From graph, } & x = -1.5 \end{align}
| x | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| y | -25 | -16 | -9 | -4 | -1 | 0 | -1 | -4 | -9 | -16 | -25 |
\begin{align} \text{From graph, } & x = 5 \end{align}