Determine whether the three points are collinear. (3, -10), (-2, -7), (0, -5)

The points are not collinear.

Solution:

Let A, B and C be (3, -10), (-2, -7) and (0, -5).

If slopes of any two points are same, then the points are collinear.

Slope formula:

Slope of AB:

Slope of BC:

Slope of CA:

Slope of AB ≠ Slope of BC ≠ Slope of AC

Therefore the points are not collinear.

yes

yes yes yes

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.