#### alysha230893

gradient of a straight line through
(-3,5) and (4,3)

#### jgv115

Use the formula:

$$\displaystyle \frac {y_{1}-y_{2}}{x_{1}-x_{2}}$$

Substitute values in to find the gradient.

#### alysha230893

does it matter what order i put the numbers

#### jgv115

Well you got (-3,5) and (4,3)

if you want to do y2-y1 then you must do x2-x1

if you want to do y1-y2 then you must do x1-x2

#### alysha230893

im sorry im a bit confused

#### jgv115

Ok,

when you are told to work out the gradient and you are given two points. Remember this formula:

$$\displaystyle \frac {y_{1}-y_{2}}{x_{1}-x_{2}}$$

You can also use:

$$\displaystyle \frac {y_{2}-y_{1}}{x_{2}-x_{1}}$$

They both will work.

Your question is: (-3,5) and (4,3)

In this case -3 will be $$\displaystyle x_{1}$$ 5 will be $$\displaystyle x_{2}$$. 4 will be $$\displaystyle y_{1}$$ and 3 will be $$\displaystyle y_{2}$$

Now substitute the values into the formula.

#### mr fantastic

MHF Hall of Fame
gradient of a straight line through
(-3,5) and (4,3)
You are posting many similar questions. It's time for you to go back and thoroughly review your classnotes and textbook on all this material.