Question

I need help with this.

Answer 1

y =
`(1)/(2)`x

Explanation:

identify two points on the line: (2, 1) (4, 2) to find the slope(
`(y2 - y1 )/(x2 - x1)`) for the line

=>
`(2- 1)/(4-2)` =>
`(1)/(2)`

find the y-intercept:

=> 0

substitute the slope and y-intercept into the equation y = mx + b

slope ↑ ↑ y-intercept

=> y =
`(1)/(2)`x + 0

=> y =
`(1)/(2)`x

Answer 2

√125

Explanation:

(0,0) (10,5)=(x1,y1) (x2,y2)

√(x2-x1)²+(y2-y1)²

√(10-0)²+(5-0)²

√10²+5²

√100+25

√125