EASY MATH QUESTION (GRAPHING)

Question

Write an equation that passes through the points (3, 6) and (1,-1)

Answer 1

Use two point form:

(y - 6) / (x - 3) = (-1 - 6) / (1 - 3)

Answer 2

Probably the fastest way is to use the definition of slope of a line: All (x,y) have to fit the slope of the line from (1,-1) to (3,6)

m = (y-(-1))/(x-1) = (6-(-1))/(3-1) = 7/2 Now, multiply both sides by x-1):

y+1 = 7/2 (x-1) (Another way to get to this equation is to find the slope from (6+1)/(3-1) and use the point slope form - this equation.)

If you need the slope-intercept form you can distribute the RHS and subtract one from both sides.

y = 7/2 x - 9/2

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