Josarah123
Use point-slope to write an equation of a line with slope of -7/9 and passing through the point (5,3). Write final equation in slope-intercept form
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baldymcgee6
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do you know what point slope form is?
Josarah123
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yeah. y=mx+b
Josarah123
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but what is point-slope?
baldymcgee6
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That ^ would be slope intercept form..
baldymcgee6
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|dw:1351645685212:dw|
Josarah123
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....where do i get an x0 in this? god that just confused me so much more
Josarah123
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cant i just do -3=-7/9(5)+b
Josarah123
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find b then plug it in?
baldymcgee6
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|dw:1351645804759:dw|
baldymcgee6
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What you suggested about is a good way to find slope intercept form..
Josarah123
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so i can use that?
baldymcgee6
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to find slope intercept, but it is easier to use point-slope and THEN get slope intercept
Josarah123
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so if I used point slope it would be y=-7/9(x--3)+5
Josarah123
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ugh i hate this
baldymcgee6
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|dw:1351646105855:dw|
Josarah123
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isn't it -3?
baldymcgee6
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you're co-ordinates given are (5,3)
Josarah123
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oops. its suppose to be -3. sorry i typed it wrong. Whatever I'm so lost. I'll just do it the way I typed. I just don't understand point-slope. But thanks for trying to teach me. I'm so dumb.