What is the Slope-intercept?

y=3x-2

Step-by-step explanation:

let's use (2,4) and (3,7)

slope: 7-4/3-2

         =3/1

     = 3

so,

4=3*2- m

m=2

the equation is y=3x-2

let's test it:

7=(3*3)-2

7=9-2

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.

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.