Answer:
b
Step-by-step explanation:
The first one would be 90%. the second one would be 2.3%. the third one would be 150%. and the final one will be 83.3333%.
Answer:
(7, -2)
Step-by-step explanation:
Add the points together and divide them by 2:
A+B/2
= ([7 + 7]/2, [3 + -7]/2)
= ([14]/2, [-4]/2)
= (7, -2)
Y = -X + 7
Y = .5(X-3)2
Alright check it out. Substitute the Y in the second equation for the first equation so...
-X + 7 = .5(X-3)2
After this, you have to get rid of the .5 and the 2 which is easy peasy because they just cancel out. If you were to multiply by half and then multiply by 2 then you'd be back to where you started. So...
-X + 7 = X - 3
Move the X to combine them on one side, I moved the -X to the opposite side by adding X to each side so you get...
7 = 2X - 3
You then add 3 to both side so...
10 = 2X
Divide by 2
X = 5
So...
Y = -5 + 7
Y = 2
Y = .5(5-3)2
Cancel out the .5 and the 2
Y = 5-3
Y = 2
(5,2) is your answer
