Question

I NEED HELPPPPPP It’s about constant rate I DONT GET THIS AT ALL :’( Explanation needed PLEASEEEEEEEE

Answer 1

D Antenna #4

Explanation:

As per given graph we can write the function

• the intercept is zero, as x=0, y=0

• at x=2, y=30 ⇒ 30= 2*15
• at x=4, y=60 ⇒ 60= 4*15

The slope is 15, so the function is

• y=15x

And the function for the antenna revolving at twice the rate would be

• y=30x

Comparing data in given tables we can see it is D Antenna #4

• x= 22 ⇒ y= 22*30= 660
• x=24 ⇒ y= 24*30= 720