SOLUTION: Write an equation in slope-intercept form for each line described. A)Slope= 8 passes through (-7,5) B)Vertical and passes through (-4,-2)

Algebra ->  Linear-equations -> SOLUTION: Write an equation in slope-intercept form for each line described. A)Slope= 8 passes through (-7,5) B)Vertical and passes through (-4,-2)      Log On


   

Question 450803: Write an equation in slope-intercept form for each line described.
A)Slope= 8 passes through (-7,5)
B)Vertical and passes through (-4,-2)
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Write an equation in slope-intercept form for each line described.
A)Slope= 8 passes through (-7,5)
B)Vertical and passes through (-4,-2)
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A)Slope= 8 passes through (-7,5)
Standard form of equation: y=mx+b
For given equation: y=8x+b
solve for b using given point on curve (-7,5)
5=8*-7+b
b=5+56=61
Equation of given line: y=8x+61
See graph below for a visual of given straight line equation.
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+graph%28+300%2C+300%2C+-10%2C+10%2C+-100%2C+100%2C+8x%2B61%29+
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B)Vertical and passes through (-4,-2)
A vertical slope means that the equation becomes: x=-4, (y does not matter)