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Mathematics 19 Online
OpenStudy (jenniferjuice):

What is the slope-intercept form equation of the line that passes through (1, 3) and (3, 7)? y = −2x + 1 y = −2x − 1 y = 2x + 1 y = 2x − 1

OpenStudy (anonymous):

im not shore

OpenStudy (jenniferjuice):

shore ?

OpenStudy (anonymous):

its not d or b right

OpenStudy (jenniferjuice):

idk im asking this or a reason

OpenStudy (anonymous):

it might be c

OpenStudy (anonymous):

y = 2x + 1

OpenStudy (anonymous):

no wait its a im shore y = −2x + 1

OpenStudy (anonymous):

u there

OpenStudy (mathmale):

Please, no guessing, especially if you're trying to be a helper here. @jenniferjuice: You are given two points in the plane. There is a formula meant specifically for finding the slope of the line connecting two given points. Would you type out that formula here, please? If you're unsure of what the formula looks ilke, please do an Internet search for "slope of a straight line."

OpenStudy (jenniferjuice):

m=y1-y2/x1-x2 ?

OpenStudy (mathmale):

That'd be perfect if you'd please enclose both numerator and denominator in parentheses. As your expression is now, there's ambiguity. Please do this now, OK?

OpenStudy (jenniferjuice):

do i fnd the slope ?

OpenStudy (mathmale):

Yes, definitely, using the slope formula that we're still discussing. Mind writing it out again, this time with numerator and denominator enclosed in parentheses?

OpenStudy (mathmale):

Once you have that formula, decide which point is #1 and which point is #2, and substitute the appropriate coordinates into the slope formula.

OpenStudy (mathmale):

Example: If you decide that point #1 is (3,7), then x1= 3 and y1=7.

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