Please help me with the following questions?

1.

\fThe given point is on the curve. Find the lines that are (a) tangent and (b) normal to the curve at the given point. 7x2 + 3xy + 3y2 +10y-7=0, (-1,0) . . . (a) Give the equation of the line that is tangent to the curve at the given point. y=Use logarithmic differentiation to find the derivative of y with respect to x. y = ( In (9x) ) In (7x) . . . dy dx\fOn a morning of a day when the sun will pass directly overhead, the shadow of a 60-ft building on level ground is 144 ft long. At the moment in question, the angle 0 the sun makes with the ground is increasing at the rate of 0.28 /min. At what rate is the shadow decreasing? Remember to use radians in your calculations. Express your answer in inches per minute. 60 The shadow is decreasing at |inches per minute. (Round to one decimal place as needed.)dy Use implicit differentiation to find and dx dx 2 3x2 + 4y2 = 4 dy 3x - dx 4y dry dx 2