multiply a vector by a matrix line by line

[BenoitM]

I am trying to multiply the vector x by the matrix y line by line:
x
100 200 150 25 35
y
1 1 0 0 0
0 0 1 0 1
0 0 0 1 0

to get:
100 200 0 0 0
0 0 150 0 35
0 0 0 25 0

with x and y having any number of columns and y having any number of rows
I tried many thigs but cannot get how to do this...

Please help,

[Phil Last]

Your target result implies that you actually want the length of the vector and width of the matrix to conform which seems to be contradicted by the final sentence. However

      x ×⍤1⊢ y

will give the answer.

corrected immediately PL

[Phil Last]

The rank operator applies its left function operand to cells of its arguments defined by the ranks in its right vector operand. so in this case 1-cells (rows) in each argument are paired. As there is only one 1-cell in x it is repeated for each in y

[Veli-Matti]

..or just using another way:

      x×[2]y

-Veli-Matti

[BenoitM]

Thank you both!