Answer:
a) y = 6x - 3
b) 1/3y = 2x -1
The first thing you need to do is isolate (y) in the second equation
3 x (1/3y) = 3 x (2x - 1)
y =6x - 3
After isolating (y) in equation b they end up being the same.
Graphing:
In order to graph this, you have to make the first point at (0, -3) since this is the Y-intercept of the equation.
In order to graph the other points, you must move 6 units up and 1 unit to the right. Or vise versa If you need a visual I'll gladly link one.
111 would be the y-intercept. This is because 111 is on the y-axis.
Answer:
1:3
Step-by-step explanation:
The required ratio will be ,
7:21
= 1 :3
11.5 x 3.2 = 36.8m
-36.8 meters change in elevation