Find slope and y-intercept from tables

Find slope and y-intercept from tables

By Stephanie Wang

How to find slope from table

Take any two points and plug it into slope formula.

Practice: Identify x₁, x₂, y₁, y₂

(3, 4) and (7, 8)
x₁= 3 x₂= 7
y₁= 4 y₂= 8

​Example

The "1" and "2" refers to which point you are looking at.
Basic format: (x₁, y₁) and (x₂, y₂)

​Info

Labelling

Label the table with x₁, x₂, y₁, y₂

Drag labels to their correct position on the image

y₂

x₁

y₁

x₂

Step 1: Pick any two points
(2,6) and (9,5)

​Step 2: Identify x₁, x₂, y₁, y₂
( 2 , 6 ) and ( 9 , 5 )
(x₁ , y₁) and (x₂ , y₂)

Example:

Example:

Draw

Find the slope by using (1,3) and (7,5). Type your answer on the next slide.

Math Response

Find the slope by using (1,3) and (7,5)

Type answer here

Correct Answer: \frac{1}{3}

Deg^°

Rad

Draw

Find the slope by using any two points. Type your answer on the next slide

Math Response

Find the slope by using any two points.

Type answer here

Correct Answer: 4

Deg^°

Rad

On the table, find when x=0  to find the y-intercept.

y-intercept: 6

​How to find y-intercept from table

Hotspot

Click on the y-intercept

Math Response

Find the y-intercept.

Type answer here

Correct Answer: 0

Deg^°

Rad

That's it for today!

Classwork (due at end of period)

Complete "Find Slope and Y-intercept from Tables Classwork" that is posted on Google Classroom. Make sure to turn it in by the end of the period for credit.