Patrick_Wright
what is the slope intercept of the line passing thourgh(-5,-2) and to the line y=1/2x-2
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Trillography
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Slope Intercept formula: y=mx+b
Patrick_Wright
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ik that obviously but idk to do with the points and the equation
Trillography
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Well if you obviously knew that then you would of known that the m is 1/2 and the b is -2. Then -5 is x and -2 is why. You have to put them in Slope intercept form.
Patrick_Wright
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ok i got 8?
CalebBeavers
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i think your question is missing a word
Patrick_Wright
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yea its parrel ot the line
CalebBeavers
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Alright.
you see the slope of y=1/2x-2 is 1/2, right?
Patrick_Wright
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wait? how is it 1/2?
CalebBeavers
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Slope intercept form
y=mx+b
m is the slope
Patrick_Wright
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yes
zaynahf
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First use Point-slope form:\[y - y _{1}= m ( x - x _{1})\]
If its parallel, it has the same slope, so m will be 1/2
The points will be (-5,-2), where Y1= -2 and X1= -5
Just plug these in, and isolate the y term on the left side to get slope-intercept form.
Patrick_Wright
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o ok lol i did then but then i solved it. i wasn't supposed to solve it?
Patrick_Wright
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nevermind did the math wrong
zaynahf
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Can you tell me what you get?
Patrick_Wright
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i got -2=1/2+-2
Patrick_Wright
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1/2x*
zaynahf
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You need to keep the x and y in there, and twhen you plug in in, it should look like: \[y + 2 = 1/2 ( x +5)\]
Patrick_Wright
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isn't that point slope form?
zaynahf
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Yes, but in order to get to slope int form, you need to start here, and then change to slope int form
zaynahf
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Can you distribute the right side out?
Patrick_Wright
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yes 1/2x+2.5
zaynahf
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Ok so now you have y + 2 = 1/2 x + 2.5
Now carry over the 2 to the right side
Patrick_Wright
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y=1/2x+1/2
zaynahf
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Thats the equation in slope int form
Patrick_Wright
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o ok thank you that really helped for my geom. final
zaynahf
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No problem