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Complete the point-slope equation of the line through (-5,7) and (-4,0)

 

solve this: y -- 7= ___

 

 

 

coolplease help

 May 15, 2018
edited by Guest  May 15, 2018
 #1
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Point-Slope form is:

 

y - b = m(x - a)

 

Where m is the slope, and (a,b) is a point the line passes through. 

 

Since we are already given the points, we can plug them in to update our equation:

 

y - 7 = m(x - (-5)) 

 

Simplyfied:

 

y - 7 = m(x + 5) 

 

We now need to solve for the slope. 

 

The slope is rise over run. 

 

Rise is the first y value minus the second y value. 

 

Run is the first x value minus the second x value

 

Rise is 7 - 0 = 7 

Run is -5 - ( -4 ) = -1 

 

The slope is -7. 

 

The equation in point-slope form is y - 7 = -7(x + 5) 

 May 15, 2018

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