What is the slope of the line passing through the points (2, −5)(2, −5) and (4, 1)(4, 1)?
Are you sure you have FOUR points? Please reread the original question.
What are the TWO given points? What is the slope of the line passing thru them? Use the slope formula.
The points are repeated pretty sure we have only those points (2,-5) (4,1) only
That's true: Just TWO separate points. What is the slope formula? Use the slope formula to find the slope of the line connecting these 2 points. Unsure? Ask for clarification.
once again sorry it repeated with the copy/paste (2, -5) and (4, 1)
That's fine. Now, plug in these four coordinates, into the slope formula. Best that you first type out the slope formula, so that we both know we're discussing the same thing.
Formula: m = ????
Jamal?
mx+b?
That's part of the equation of a straight line. We don't yet have the slope, m, so no, that is not the correct formula. The slope formula is
\[m=\frac{ y _{2}-y _{1} }{ x _{2}-x _{1} }\]
I'm sure you've seen this before. If you're unsure of what to do, ask questions.
how do i plug it in
What are those 2 points again? list them.
(2, -5) (4, 1)
In that case, let x1=2, x2=4, y1=-5 and y2=1. Substitute these values into the slope formula that I've given you.
m = y2=1 y1=-5 ---------- x2=4 x1=2
Good start. Here's what I'm looking for: m = 1 - (-5) ---------- Find the value of this please. 4 - 2
m = -6 ----------- 2
Explain why that 6 came out negative.
oh sorry i just did it wrong
m=?
3
yes. That's the answer you wanted. You must learn, memorize and practice that slope formula. Be careful not to include any '=' signs in this formula as you evaluate a slope. Just the numeric values. 5+1 m = ----------- 4-2
OK? Any further questions about this problem?
no. thanks for the help
You're welcome. Bye!
@mathmale you are living saver
You mean, possibly, "life saver?" I wouldn't go that far in describing myself. But thanks for the thought. ;)
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