Pearson Algebra 2 Common Core, 2011
PA
Pearson Algebra 2 Common Core, 2011 View details
2. Arithmetic Sequences
Continue to next subchapter

Exercise 82 Page 577

The Point-slope form is y-y_1=m(x-x_1).

Example Solution: y-3= 8/3x

Practice makes perfect
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. (0,3) and (3, 11) To determine the slope of the line, we use the Slope Formula.
m=y_2-y_1/x_2-x_1
m=3- 11/0- 3
m=- 8/- 3
m=8/3
Now that we know the slope of the line is 83, 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 ( 0, 3).
y-y_1=m(x-x_1)
y- 3= 8/3(x- 0)
y-3= 8/3x
Please note that any point on the line can be used to form a point-slope equation. Therefore, our equation is only one of infinitely many possible equations!