Slope Formula

Slope Formula

How to find slope just from the numbers

Multiple Choice

Find the slope:

• $$\frac{3}{4}$$

• $$\frac{4}{3}$$

• $$\frac{1}{4}$$

• $$\frac{3}{1}$$

Multiple Choice

Find the slope of the line.

• 2

• $$\frac{4}{1}$$

• $$\frac{3}{1}$$

• $$\frac{1}{2}$$

Multiple Choice

Find the slope

• -5/3
• -3/5
• 5/3
• 3/5

Multiple Choice

• 1/6

• 1

• -1/6

• -1

But that's a lot of squares to count. Or maybe you don't have a picture to work with?

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You need to find the slope between the points ​(-3,3) and (3,-1)

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So you want to find the slope

And when you do, watch out for those built-in negatives.

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Plug in to this formula

First point is x1 y1

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Second point is x2 y2​

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Once you label your points, it's formula time

First, name your coordinates

Plug in negatives with ( ) around them!

Sometimes you have double negatives

Simplify the fraction if needed​

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Find the slope between (-4, 3) and (-1, -7)

Because x1 was negative, you have to subtract a negative

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2 - (-3) = 5!​

Another example

Multiple Choice

• 1/-2

• 5/14

• 1/2

• -1/2

Multiple Choice

Find the slope of the line that goes through the points (−11,−5) and (1,−12)

1. Write (-11, -5) and (1, -12) on your desk.

2. Label them x1 y1 x2 y2

3. Put numbers in the right places in the formula

4. Simplify

• $$-\frac{5}{8}$$  

• $$\frac{16}{11}$$  

• $$\frac{1}{6}$$  

• $$-\frac{7}{12}$$  

Multiple Choice

Find the slope of the line that goes through the points

(−1,−2) and (−3,−4).

• 1

• 2

• 3

• 4

Multiple Choice

Find the slope:

• 3/4
• 4/3
• -3/4
• -4/3

Multiple Choice

Find the slope given the points (2, −7) and (−1, 6). 

• -13/3
• 13/3
• 0
• 2/3

Slope Task Cards

Try to do 5-10 of them

Answers on Canvas

Work with a partner

Pick random cards

Complete it and check it

Fill out post-it note with a check mark for correct, X for wrong​

Instructions