Find the point-slope equation for the line that passes through the points (30,2) and (15,-28). use the first point in your equation.

answer:    Y - 2 = 2(X - 30)

Step-by-step explanation:

Slope formula is (y2-y1)/(x2-x1)

y1=2 y2=-28 x1=30 x2=15

(-28 - 2)/(15 - 30) = -30/-15 = 2

Point slope formula is:  y - y1 = m(x - x1)

m= slope,    slope, as found above = 2

y1=2 x1=30 (first equation)

y - 2 = 2(x - 30)

x = 25

step-by-step explanation:

a^2+b^2=c^2

7^2+24^2=c^2

49+576=625

sqrt625=25

x=25

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.