Question

A line passes through points with coordinates

(3,7) and (-2,-3). What is the equation of the
line?
1) y = 2x + 1
2) y = 2x + 4
3) y = -2x +1
4) y = = -2x + 13

Answer 1

y = 2x + 1

Explanation:

`m = (-3 - 7)/(-2 - 3)\\ = (-10)/(-5)= 2\\y = mx + b \\y = 2x + b\\7 = 2(3) + b\ -> 7 = 6 + b \\b = 1 \\y = 2x + 1`