Innorder to answer your question we need to know what the question is
The goal in solving an equation is to get the variable by itself on one side of the equation and a number on the other side of the equation. To isolate the variable, we must reverse the operations acting on the variable.
First
Outer
Inner
Last
it is a way of remembering how to multiply binomials
it tells which terms to multiply
example
(x+3)(x+4)
First (multiply first terms)
x times x=x²
Outer (multiply outer terms)
x times 4=4x
Inner (multiply inner terms)
3 times x=3x
Last (multiply last terms)
3 times 4=12
now add them all
x²+4x+3x+12
x²+7x+12
that is what FOIL is
No, because 5x4 equals 20 and 1x4 equals 4. And if add 20 plus 4 it equals 24. That is why he is wrong.
The slope-intercept form: y = mx + b
m - slope
b - y-intercept
We have: m = 1 and b = -1. Substitute:
y = 1x - 1
<h3>Answer: y = x - 1</h3>