Linear Functions: Two Points, Slope Point

Udothemath printable: 10 FMP Unit 6 Skill 3 and 4a

Using Slope and y intercept (Skill #3)

Use the formula

    \[m=\frac{y_2-y_1}{x_2-x_1}\]

to find the slope of each line. Use the vertical intercept to complete the equation in the form

    \[y=mx+b\]

Worked Example: example slope y intercept

Using Two Points (Skill 4a)

Use the formula

    \[m=\frac{y_2-y_1}{x_2-x_1}\]

to find the slope of each line.

Now substitute the x and y coordinates of one of the points to find the value b. Type in your formula in the form

    \[y=mx+b\]

Example: Example two points

Using One Point and the Slope (Skill 4b)

Udothemath printable:Grade 10 Unit 6 Skill 4b

The formula

    \[y-y_1=m(x-x_1)\]

is very useful for the next applet. But no need to be bound by one method, try out your own.

Example: Example slope point


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