I need help with the attached math assignment.

\fHere, the slope slso represents the average cost per sguare foot using the two houses you selected. Your awerage cost per additional square foot is . Complete parts D1 and D2 to write the linear equation in slope-intercept form. D1. Substitute the walues for x,, y,, and m in the formula belew. Use the decimal value found in part C for the slope (m), and only one point (ordered pair) identified in step 2 in the paint-slope farmula listed below. y =mixrx) 2. Starting with the point-slope formula, find the slope-intercept form equation, y=mx+b. Show each step of your work. Round your walue form and b to four decimal places. y=y =mixx) What is the linear equatien in slope-intercept form? Indicate whether the line in Part D rises, falls, is horizontal, or is vertical. a. The line rises from left to right. b. The line falls from left to right. c. The ling is horizontal. d. The Fine is vertical. The comect answer is choice Based on your answer for Part E, describe the relationship between square footage of a house (x} and price {y}. In other words, when the square footage increases, what happens to the price