Question

Determine the equation of the line with the following characteristics.

Slope 3, passing through (2,3) and (-1,9)

Answer 1

y = 3x - 3

Explanation:

Given, (2,3) and (-1,9), m = 3

Equation of a straight line is y = mx + c

Here, y = 3, x = 2 and m = 3

Substituting the values in y = mx + c we get,

3 = 3(2) + c

c + 6 = 3

c = 3 - 6

c = -3

So, the equation of the line is y = 3x - 3 (Answer).