Questions: Lesson 1 Practice Problems
4. The points (2,-4), (x, y), A, and B all lie on the line. Find an equation relating x and y
Transcript text: Lesson 1 Practice Problems
4. The points $(2,-4),(x, y), A$, and $B$ all lie on the line. Find an equation relating $x$ and $y$
Solution
Solution Steps
Step 1: Find the slope of the line
We can use points A(6,0) and B(10,2) to calculate the slope, _m_.
_m_ = (2-0)/(10-6) = 2/4 = 1/2
Step 2: Use the point-slope form of a linear equation
The point-slope form of a linear equation is _y_ - _y_1 = _m_(_x_ - _x_1). We can use the slope _m_=1/2 and the point (6,0) to get the following equation.
_y_ - 0 = 1/2(_x_-6)