Question

How do you graph `y = x^2- 5x + 4` using a table of values?

Answer 1

graph{y=x^2-5x+4 [-4.494, 7.79, -4.033, 2.107]}

Explanation:

`y=x^2-5x+4`
When x = 1,
`y=1-5+4=0`
When x = 2,
`y=4-10+4=-2`
x = 0, y = 4
x = -1, y = 10
x = -2, y = 18
For various values of x, y is calculated and tabled below and plotted in a graph.

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| x 5 4 3 2 1 0 -1 -2 -3 -4 -5 |
| y 4 0 -2 -2 0 4 10 18. 28 40 54 |

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