Reflect the points across the x axis -9, 7 reflect the points across the y axis -9,7

the answer is 9,-7

Step-by-step explanation:

if you go on a x,y graph you just count the square amounts

away from the number

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11-1 > 1-1+a

-12 > a