Can a 6 8 10 make a right triangle?

yes

Step-by-step explanation:

using the converse of Pythagoras' identity.

If the square on the longest side is equal to the sum of the squares on the other two sides, then the triangle is right.

longest side = 10 , then 10² = 100

6² + 8² = 36 + 64 = 100

then 6, 8, 10 make a right triangle

the correct answer is option c.   3

step-by-step explanation:

points to remember

equation of the line with coordinates (x₁, y₁) and (x₂, y₂) is given by,

slope m = (y₂ - y₁)/(x₂ - x₁)

from the figure we can see a line with two coordinates given

to find the slope of given line

here   (x₁, y₁)   = (-1, -1 ) and (x₂, y₂) = (1, 5)

slope m = (y₂ - y₁)/(x₂ - x₁)

  = (5 - -1)/(1 - -1)

  = (5 + 1)/(1 + 1)

  = 6/2 = 3

therefore the correct answer is option c.   3

both equations and proportions are better.