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Pearson Algebra 1 Common Core, 2011 View details

4. Point-Slope Form

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Exercise 10 Page 318

You are given everything you need to use point-slope form.

y+7=4/5(x+2)

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An equation in point-slope form follows a specific format. y- y_1= m(x- x_1) In this format, m represents the slope and the point ( x_1, y_1) lies on the graph of the line. We are given the point ( -2, -7) and the slope 45, so we have everything we need to create a point-slope form equation.

y-y_1=m(x-x_1)

SubstituteIII

Substitute x_1= -2,y_1= -7,m= 4/5

y-( -7)= 4/5(x-( -2))

SubNeg

a-(- b)=a+b

y+7=4/5(x+2)