Question

Jamie is 5 years older than Ella. Jamie's age is 11 years less than three times Ella's age. The system below models the relationship between Jamie's age (j) and Ella's age (e):

j = e + 5
j = 3e − 11

Which of the following methods is correct to find Jamie's and Ella's age?

Solve j + 5 = 3j − 11 to find the value of j.
Write the points where the graphs of the equations intersect the x-axis.
Write the points where the graphs of the equations intersect the y-axis.
Solve e + 5 = 3e − 11 to find the value of e.

I chose D, am I right ?

Answer 1

there are different ways of expressing the same value
example 10 = 4 + 6 and 10 = 8 + 2 and 10 = 7 + 3
4 + 6 = 8 + 2 = 7 + 3 all = 10
using this concept same applies to variables
j = j so e + 5 = 3e - 1
there is one equation with one unknown variable

Answer 2

yes D is correct

Answer 3

Ok, thank you

Answer 4

welcome