Hi again !

a) A point on the line y=3x-4 has a x-coordinate of 50.

What is the y-coordinate of this point?

I did 3x50-4 and go 146 but I think its wrong!

b) A point on the line y=3x-4 has a y-coordinate of 50.

What is the x-coordinate of this point?

I did 50+4 divided by 3 and got 18 but i think thats wrong too

c) Is the point (-10, -34) on the line y=3x-4? Show how you know

Thankyou to anyone who can explain this to me !

Hannah