SOLUTION: hi im having a real big problem today. I havent been doing the best in math.i had 2 d's and then i finally got it up to a c put it went back down so can you please tell me how to t

Algebra ->  Graphs -> SOLUTION: hi im having a real big problem today. I havent been doing the best in math.i had 2 d's and then i finally got it up to a c put it went back down so can you please tell me how to t      Log On


   

Question 712126: hi im having a real big problem today. I havent been doing the best in math.i had 2 d's and then i finally got it up to a c put it went back down so can you please tell me how to the slope and y intercept slope of -6 and goes through the point (5, 12)
(7, 3) and (5, 4)
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
the slope and y intercept slope of -6 and goes through the point (5, 12)
Use the point/slope form: y - y1 = m(x - x1), where
m = -6; x1 = 5; y1 = 12
so we have:
y - 12 = -6(x - 5)
y - 12 = -6x + 30
y = -6x + 30 + 12
y = -6x + 42, the equation in the slope/intercept form
:
(7, 3) and (5, 4)
Find the slope using the formula: m = %28y2-y1%29%2F%28x2-x1%29, where
x1 = 7; y1 = 3
x2 = 3; y2 = 4
so we have;
m = %284-3%29%2F%285-7%29 = 1%2F%28-2%29 OR -1%2F2 is the slope (m)
Use the point/slope form: y - y1 = m(x - x1), where
m = -1/2; x1 = 7; y1 = 3
so we have
y - 3 = -1%2F2(x - 7)
y - 3 = -1%2F2x + 7%2F2
y = -1%2F2x + 7%2F2 + 3
which is
y = -1%2F2x + 7%2F2 + 6%2F2
y = -1%2F2x + 13%2F2
or
y = -.5x + 6.5; the equation in slope/intercept form
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Hey! Keep plugging away, we're here to help you. C