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Point-slope form is y-y_1=m(x-x_1).
y=-1/3x+2
Equations in point-slope form follow a specific format.
y- y_1= m(x- x_1)
In this form, m is the slope of the line and ( x_1, y_1) is a point on the line. Here, we are given that the line passes through two known points.
Substitute ( -9,5) & ( -3,3)
a-(- b)=a+b
Add and subtract terms
Put minus sign in front of fraction
a/b=.a /2./.b /2.
Calculate quotient
Now that we know the slope of the line is - 13, we can write the equation of the line in point-slope form. We can use either of the given points as (x_1,y_1) in our equation. Let's use ( -9, 5).
Since any point on the line could be used to form a point-slope equation, there are infinitely many possible equations. However, we are asked to write the equation in slope-intercept form, so this will give us a unique equation for this line.
Distribute (-1/3)
Put minus sign in numerator
1/b* a = a/b
Multiplication Property of -1
Put minus sign in front of fraction
Calculate quotient
a+(- b)=a-b
LHS+5=RHS+5
Add terms
a* b/c=a/c* b