Question

Find the equation of a line passing through (3,6) and (4,8)

Answer 1

Answer:

y=2x

Step-by-step explanation:

This one needs to be done using point slope formula, or $\frac{y_{2}-y_{1} }{x_{2}-x_{1}}$

Let's plug in the numbers. $\frac{8-6}{4-3}$

or, $\frac{2}{1}$ or 2.

So, now we have the equation y=2x+b. We can use one of the points to find b. Let's use (3,6)

6=2(3)+b

6=6+b

b=0

so, our equation is y=2x