What is the vertex and equation of directrix of the parabola x²-8y+4x=0​

The base of a pyramid is a square with 5 lines of 5cm the slant height of each lateral face of the pyramid is 6 cm what is the surface area of the pyramid

Mr. barth is painting an arrow on the school parking lot. he plots the arrow on the coordinate plane as shown below. what is the area of the arrow he is painting?

The equation of line e is y  =  -4/9x  +  5/6.  line f is parallelto line e.  what is the slope of line f