How to do question 4. a and b?

Question

How to do question 4. a and b?

1 Answer

Impact of this question

1269 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-02-03T09:31:48

$y=2.25x$
$d=24622m$

Explanation:

$y=mx+b$
$b=0$ , because it goes through the origin.
$m=(y_1-y_2)/(x_1-x_2),$ which is true for any two points which are included by the function. In this case we have the points:
$p_1(0|0)$
$p_2(10|22.5)$
$m=(22.5-0)/(10-0)=2.25$
$y=2.25x+0=2.25x$

For the distance we use pythagoras:

$a^2+b^2=c^2$
$a=10, b=22.5, c=unknown$
$10^2+22.5^2=c^2$
$606.25=c^2$
Than, we take the root.
$sqrt(606.25)=c~~24.622km (24622m)$

Science

Math

Humanities

... and beyond

How to do question 4. a and b?

1 Answer

Explanation:

Related questions

Impact of this question