1. The equation x² + 2xy + 3y2 = 1 describes an ellipse (see graph). -04
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(a) (6 points) The slope of the tangent line at point P (located at (1,0)) is -1. The slope of
the tangent line to the ellipse at (-1,0) looks to be -1 as well. Is it? If so, show why. If
not, what is the slope?

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

step-by-step explanation:

formula

x = x1 + p/w(x2 - x1)

let the line segment ab with a(x1,y1) and b(x2,y2)

a point(x,y) divide ab in the ratio, 2: 3 the x coordinate can be written as

x = x1 + p/w(x2 - x1)

here p=2 and w = 2+3

therefore,

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

similarly y coordinate y = y1 + 2/5(y2 - y1)

answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.

is there supposed to be a picture here?