SOLUTION: needing help in math. Using the point-slope formula, what is the equation of the line that passes through the points (1,5) and (0,0)?

Question 39746: needing help in math.
Using the point-slope formula, what is the equation of the line that passes through the points (1,5) and (0,0)?
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Starting with the "point-slope" form: , you'll need to find the slope, m, of the line that passes through the points (1, 5) and (0, 0).
The slope of a line is given by:
Where: (x1, y1) is (1, 5) and (x2, y2) is (0, 0), so substituting these values into the slope formula, you get:

Now you substitute this value of m into the point-slope form.
Next, you will substitute the x and y values from either one of the two given points and solve for b, the y-intercept.
Choosing the first point (1, 5), you'll get:
Simplify and solve for b. Subtract 5 from both sides of the equation.

Now you can write the final equation in the point-slope form:
Since b = 0, you won't need to put it in the equation.

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