The points ABC have coordinates (3,5)(7,8)(6,1) respectively. show by calculation that AB is perpendicular to AC. also find the equation for AC in the Form ax+by+c=0 where a, b, c are integers whose value must be stated. also the point D is on AC produced and AC:CD =1:2, find the coordinates of D.​

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

what is the answer?

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)

14

step-by-step explanation:

14