Question

What is the distance between point (7,9) and point (-2,7)

Answer 1

Answer:

√85 or 9.22

Step-by-step explanation:

For this, you'd want to use the distance formula, which is just something you'd eventually memorize.

Distance = $\sqrt{(x_{2}- x_{1})^{2} + (y_{2}- y_{1})^{2}}$

Then, you'd plug in the values. Something to keep in mind is the coordinate that is farther right will be ($x_{2} ,y_{2}$), since $(x_{2}- x_{1})$ is supposed to represent the change in x (and same with the y).

d = √( (7 - (-2))² + (9 - 7)²)

= √( (9²) + 2²)

= √(81 + 4)

= √85

= 9.22

I hope this helps!