Question 186615: Choose the slope-intercept form of the equation of the line that passes through (-2,4) and is perdendicular to the graph of 2x+y=-20
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Choose the slope-intercept form of the equation of the line that passes through (-2,4) and is perdendicular to the graph of 2x+y=-20
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It's a 2 step process.
1st, find the slope, m, of 2x+y=20. Do that by putting it in the slope-intercept form, which means solve for y.
y = -2x + 20
m = -2
The slope of lines perpendicular will be the negative inverse, or +1/2 (ok, 3 steps?)
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Step 2.5
Use y-y1 = m*(x-x1) where (x1,y1) is the point (-2,4)
y-4 = (1/2)*(x+2)
y = (1/2)x + 5 slope-intercept form
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