Which is an equation of the line passing through points at (1, 6) and (-2, 1)?
y = 2x + 5
y = 5/3x + 13/3
y = x + 5
y = -1/2x +13/2

Question

Which is an equation of the line passing through points at (1, 6) and (-2, 1)?
   y = 2x + 5 
   y = 5/3x + 13/3 
   y = x + 5 
   y = -1/2x +13/2

anonymous · Answer

Try getting the slope of the line first, using the formula: $$m=\frac{y_2-y_1}{x_2-x_1}$$

anonymous · Answer

The slope is -5/3

anonymous · Answer

i mean -5/-3

anonymous · Answer

Great, that's what I got as well. Those minus signs will cancel each other out too, and you'll have $\frac{5}{3}$ as the slope. The next step is to plug some numbers into the equation for a line, which is:
$y-y_1 = m(x-x_1)$

anonymous · Answer

so the answer is  y = 5/3x + 13/3

anonymous · Answer

That's what I got, and it matches up to option B above. Congrats on getting it right!