Y=3x+4.5 is NOT the equation the correct answer is what the person under me typed
We can find a and b using inverse trig functions,


Hope this helps.
There it is in the image. Hope it helps. You don't need the negative y- axis.
Answer:
7.5
Step-by-step explanation:
5/6=x/9
cross multiply
6x=45
x=45/6
x=7 3/6 = 7 1/2 = 7.5
Put them into y=mx+b
y=1/3x -1
y=2/3x-4
Graph them. Where they touch is your answer. No touch? No solution. Same line? Infinite solutions.
Second set: Same thing.
Solution to first set is (9,2)