The range would be [-4, infinity) because range is the y-value. The lowest y-value is -4. The greatest y-value goes up to infinity.
If you know the answer, it is very easy to prove. You just have to do 27 - 15 = 12. Then, you do 12/15 is equal to 4/5, which is 80 percent. :)
Answer:
Jo's age = x = 8 years
Step-by-step explanation:
Let
Jo's age = x
Jo's mother, Anne's age = 4x
In four years time, Anne will be three times as old as Jo.
Jo's age =3( x + 4)
Jo's mother, Anne's age = 4x + 4
How old is Jo?
Equate Jo's age and his mother's age
3(x + 4) = 4x + 4
3x + 12 = 4x + 4
3x - 4x = 4 - 12
-x = - 8
Divide both sides by -1
x = 8
Therefore,
Jo's age = x = 8 years
Answer:
1/2x -12
Step-by-step explanation:
y- -7 = 1/2 (x-10)
y + 7 = 1/2x - 5
-7 -7
y= 1/2x -12
