Cost $35, discount 20%, sales tax 6.5%
i need sales price and total price separate

It would be 28$ with discount. Sales tax of that is 1.82$ and the total price after discount and sales tax added would be 26.18$

We have several equations for linear function ..
point slope is used when you're given a point that the graph passes through..
so you will substitute it in point slope equation :
( y - y1 ) = m (x - x1)

& ( usually slope is given with a point )
( substitute the point in y1 & x 1 )




use slope intercept form
when you need to find :
slope : m
or y-intercept : b
only one of them is missing or required

y = m * x + b


we also have general form:
ax (-/+) by +c = 0

use only when asked ( write the equation is general form )

"" you should have found every item then rearrange it in to general form ""