SOLUTION: how do i find the slope & y-intercept of y=1.8x? & what does it mean when they say find an equation of the line containing the given point & having the given slope of (-3,0),m=-2?

Algebra ->  Linear-equations -> SOLUTION: how do i find the slope & y-intercept of y=1.8x? & what does it mean when they say find an equation of the line containing the given point & having the given slope of (-3,0),m=-2?      Log On


   

Question 675865: how do i find the slope & y-intercept of y=1.8x? & what does it mean when they say find an equation of the line containing the given point & having the given slope of (-3,0),m=-2?
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
y = 1.8x
comparing to the y=mx+b slope-intercept format
slope, m, is 1.8
y intercept, b, is 0
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graph%28300%2C200%2C-10%2C10%2C-10%2C10%2C1.8x%29
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When given the slope and a point, use the point-slope formula to determine the linear equation.
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y-y1 = m(x-x1)
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y - 0 = -2(x--3)
y = -2(x+3)
y = -2x + -6
highlight_green%28y=-2x-6%29
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graph%28300%2C200%2C-10%2C10%2C-10%2C10%2C-2x-6%29
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