Ask your own question, for FREE!
Mathematics 7 Online
OpenStudy (jamaljunior):

What is the slope of the line passing through the points (2, −5)(2, −5) and (4, 1)(4, 1)?

OpenStudy (mathmale):

Are you sure you have FOUR points? Please reread the original question.

OpenStudy (mathmale):

What are the TWO given points? What is the slope of the line passing thru them? Use the slope formula.

OpenStudy (will.h):

The points are repeated pretty sure we have only those points (2,-5) (4,1) only

OpenStudy (mathmale):

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.

OpenStudy (jamaljunior):

once again sorry it repeated with the copy/paste (2, -5) and (4, 1)

OpenStudy (mathmale):

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.

OpenStudy (mathmale):

Formula: m = ????

OpenStudy (mathmale):

Jamal?

OpenStudy (jamaljunior):

mx+b?

OpenStudy (mathmale):

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

OpenStudy (mathmale):

\[m=\frac{ y _{2}-y _{1} }{ x _{2}-x _{1} }\]

OpenStudy (mathmale):

I'm sure you've seen this before. If you're unsure of what to do, ask questions.

OpenStudy (jamaljunior):

how do i plug it in

OpenStudy (mathmale):

What are those 2 points again? list them.

OpenStudy (jamaljunior):

(2, -5) (4, 1)

OpenStudy (mathmale):

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.

OpenStudy (jamaljunior):

m = y2=1 y1=-5 ---------- x2=4 x1=2

OpenStudy (mathmale):

Good start. Here's what I'm looking for: m = 1 - (-5) ---------- Find the value of this please. 4 - 2

OpenStudy (jamaljunior):

m = -6 ----------- 2

OpenStudy (mathmale):

Explain why that 6 came out negative.

OpenStudy (jamaljunior):

oh sorry i just did it wrong

OpenStudy (mathmale):

m=?

OpenStudy (jamaljunior):

3

OpenStudy (mathmale):

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

OpenStudy (mathmale):

OK? Any further questions about this problem?

OpenStudy (jamaljunior):

no. thanks for the help

OpenStudy (mathmale):

You're welcome. Bye!

OpenStudy (will.h):

@mathmale you are living saver

OpenStudy (mathmale):

You mean, possibly, "life saver?" I wouldn't go that far in describing myself. But thanks for the thought. ;)

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!