Question

Use the number line​ below, where RS=4y + 3, ST = 2y + 7, and RT=10y-10. a. What is the value of y? b. Find RS, ST, and RT.

Answer 1

a) 4y + 3 + 2y + 7 = 10y - 10

6y + 10 = 10y - 10

4y = 20

y = 5

b) RS = 4(5) + 3 = 23

ST = 2(5) + 7 = 17

RT = 10(5) - 10 = 40