Equation of the horizontal line through (7 , -5)
Horizontal line is a slope of 0, so y=constant.
Answer: y = -5
Slope -2 through (-4 , -5)
Point slope form of line slope m thru (a,b) is y-b = m(x-a)
y - -5 = -2 (x - -4)
y + 5 = -2x - 8
Answer: y = -2x - 13
check: slope is right, -2(-4) - 13 = 8 - 13 = -5, good