How do i make 1\2x-y=4 into slope intercept form

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

Which table represents a linear function? i'll give brainliest to first answer ^'^