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\[\large y = mx+b\] m = slope b = y-intercept
First, I suggest you to figure out the slope.
Do you know how to?
the slope is -5
Okay so we will go with that.
Now that we have the slope as -5, we can substitute m for that. \[\large y = -5x + b\] Usually, in this case, what I would do is choose a coordinate from the two that are already given. So we will use (-2,-1)... As you can see that with -5 there is a "x". We will substitute that x with -2 and the y before the equal sign will be replaced with the y-coordinate (or -1). \[\large -1 = -5(-2) + b\] Now you need to solve for b.
So I'm multiplying -5 and -2 and that gives me 10
yes go on...
I don't know how to solve for b...I don't know what to do next
\[\large -1 = 10 + b\] \[\large -1 - 10 = 10 - 10 + b\] \[\large -11 = b\] Let's check this now: \[\large -1 = -5(-2) - 11 => -1 = 10 - 11 => -1 = -1\]
\[\large -6 = -5(-1) -11 => -6 = 5 - 11 => -6 = -6\]
So your slope intercept form is \[\large y = -5x - 11\]
sorry I'm at work...trying to get off the phone so I can look
Ok, you subtracted 10 from both sides and that gave you the -11
we needed to isolate b
Thank you. I have a final on this stuff today and I'm just stressed out. I don't remember doing this stuff
It's okay .. take a deep breath and you will be fine.. just review the work that I did in here.
I will. thanks again