Answer:
Good
Step-by-step explanation:
How has been your day?
(2,5) is not on first line: 4*(5)+2 = 22 not 4 - first statement is false
(-4,2) is <span>on first line: 4*(-4)-2 = -18
</span>(-4,2) is <span>on second line: 2*(-4)-(2) = -10 - second statement is false</span>
(2,5) is not <span>on second line: 2*(-5)-2 = -12 not 8 - third statement is true
(-4,2) is on bought lines - 4rd statement is false</span>
It looks like for all of these we will be using the Pythagorean theorem.
If you don't know what this is or how to apply it, go to the website "Khan Academy" and watch his video(s) on it. I would suggest going to that site whenever you don't understand something in math :)
I'll just be giving you the answers and won't explain what I'm doing, but please do go to Khan Academy to find out how to do it on your own!!
Anyway, onto the answers.
1) a = 12.5, b = 5.7, c = 13.7.
2) 24
3) 19.2
4) 6.4
5) 18.7
6) 98.5
7) 1.9
Hope this helps!!!