Write the following MATLAB functions: •B = swap(A, i, j). Here A is an (n × n) matrix and, i and j are indices. The
function should take the matrix A and swap the rows i and j. Output the resulting
matrix as B.
• index = max entry(A, i). Here A is an (n × n) matrix and i is an index. The
function should extract the column i of A, and find the maximum (in modulus!)
entry of that column below the diagonal entry A(i, i) (including the diagonal
entry). Output the row index of the maximum entry in index.

Choose the graph that matches the following system of equations: 7x + 2y = −6 6x − 7y = 21 a line includes points negative 2 comma 4 and 0 comma negative 3. a line includes points 6 comma 2 and 0 comma negative 3 a line includes points 0 comma negative 3 and 6 comma 2. a line includes points negative 2 comma 1 and negative 3 comma 4 a line includes points 0 comma negative 3 and negative 1 comma 4. a line includes points 0 comma negative 3 and negative 1 comma 3 a line includes points 0 comma 3 and negative 1 comma negative 3. a line includes points 0 comma negative 3 and negative 2 comma 4.

Can you answer my question? will mark brainiest!

Which is f(5) for the function –2x2 + 2x - 3?