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anonymous
 one year ago
Write the equation of a line in slopeintercept form that has a slope of 2 and passes through the point (2, 8).
a. y = 2x  4
b. y = 2x + 18
c. y = 2x  8
d. y = 2x – 12
anonymous
 one year ago
Write the equation of a line in slopeintercept form that has a slope of 2 and passes through the point (2, 8). a. y = 2x  4 b. y = 2x + 18 c. y = 2x  8 d. y = 2x – 12

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Ciarán95
 one year ago
Best ResponseYou've already chosen the best response.0Given a line passing through a point with coordinates (x1, y1) and having a slope of m, the equation of that line can be given by: \[y  y _{1} = m(x  x _{1})\] So, by substituting in our values for x1, y1 and m into the above and rearranging to get y on its own, you should have the answer. Hope that helps! :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can you show me how lol

Ciarán95
 one year ago
Best ResponseYou've already chosen the best response.0For our line, we have a point (2, 8) that it passes through and a slope of 2. We now need to label our x1, y1 and m, as I talked about in my previous post. So, x1 = 2 x2 = 8 m = 2 Now, replace the x1, y1 and m in our general equation for the line with 2, 8 and 2 respectively. This will give us: \[y (8) = 2(x 2)\] or \[y + 8 = 2(x  2)\] Then, it's a case of multiplying out the bracket on the righthand side of the equation and isolating the 'y' term on its own on the lefthand side so that your equation looks like one of the options listed in the question.
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