How to solve (iii) by using Gauss-Jordan method? I've tried it many times and I still dont get the right answer.

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t

Find the maximum value of p= 4x + 5y subject to the following constraints :

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work: