So slope intercept form
y=mx+b
m=slope
b=y intercept
so slope is found by
(y2-y1)/(x2-x1)
(x,y)
x1=-3
y1=-5
x2=1
y2=3
subsitute
(1-(-5))/(3-(-3))=(1+5)/(3+3)=6/6=1
slope=1
m=1
subsitute
y=1x+b
subsitute one of the points to find b
x=1
y=3
3=1(1)+b
3=1+b
subtract 1
2=b
the equatino is
y=x+2
It is -48 u cross multiply... so it would be -48a
If you simplify using the distributive property you should get D
Jean and Jonathans' age illustrate arithmetic sum, and the sum of their ages in three years time is x + y + 6
<h3>How to determine the sum of their ages?</h3>
Currently, their ages are:
Jean = x
Jonathan = y
In 3 years, their ages would be:
Jean = x + 3
Jonathan = y + 3
So, the sum of their ages is:
Sum = x + 3 + y + 3
Evaluate
Sum = x + y + 6
Hence, the sum of their ages in three years time is x + y + 6
Read more about arithmetic sum at:
brainly.com/question/6561461
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