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Maths Exercices
Writing a Linear Equation to Describe a Table

You can use the data in a table to create a linear equation. You can use the data to find the slope. Once you know the slope, you can use one ordered pair and the point-slope form to create your equation.

Rules for Writing a Linear Equation from a Table
1. Choose two sets of ordered pairs. Find the slope.
2. Use one of the ordered pairs as the x and y coordinates in the point-slope form of an equation.
3. Place the values into the point-slope form.

Write a function to describe:

x
0
1
2
3
f(x)
0
2
4
6

1. Choose two sets of ordered pairs. Find the slope:

2. Use one of the ordered pairs as the x and y coordinates in the point-slope form of an equation.
3. Place the values into the point-slope form.

y-y1=m(x-x1)

y-0=2(x-0)

y=2x