Step-by-step explanation:
x = father's age now
y = son's age now
x = 2y + 10
x - 20 = 5(y - 20) = 5y - 100
using the first in the second equation :
2y + 10 - 20 = 5y - 100
-10 = 3y - 100
90 = 3y
y = 30
x = 2y + 10 = 2×30 + 10 = 60 + 10 = 70
the father is now 70 years old, the son now 30 years old.
Answer:
Can u give me a picture more clear
Answer:
y=2x-6
Step-by-step explanation:
y+4=2(x-1)
Subtract 4 to both sides of the equation:
y+4-4=2(x-1)-4
y=2(x-1)-4
Distribute the 2:
y=2x-2-4
y=2x-6
Where 2 is the slope and -6 is the y - intercept.
Answer:
Step-by-step explanation:
