Am i right?

Question

ok the coordiantes are (-1,0) (-5,6) i think the slope is -1.5 and i think y = -1.5x + (-1.5)
but i think i am wrong

Answer 1

That's right dude, well done.

Answer 2

It is correct! =) To make sure..

let's find the slope.
we know the equation for a function is y=mx+b
where m = the slope

How to find the slope?
well, rise / run. which is
(6-0) / (-5 - (-1)) = 6/-4 = -1.5

We then plug that into the equation,
y = -1.5x +b, and we plug in either coordinate to find b

0 = -1.5 * -1 +b
0 = 1.5 +b
b = -1.5

OR

6 = -1.5 * -5 +b
6 = 7.5 +b
b = -1.5

So congrats! You are correct!

Answer 3

you know two sets of coordinates, so you must sove for 'm', the slope. Here's the formula:

m=(y2-y1)/(x2-x1)
m=(6-0)/(-5-(-1))
m=6/-4
m=-3/2 or -1.5

since you already have two sets of coordinates, you could have graphed it. However with the slope you can start at any one set of the coordinates and find other possible coordinates to confirm that your graphed line is correct.

Congratulations! well done.

Answer 4

nope, you're right! the slope is -1.5, so the equation is y = -1.5x-1.5. graphed it myself, then double-checked on my graphing calculator.

Answer 5

your wrong.