The answer for 3m+5=8 is m=5
Yes, there is a type of triangle called a "3 4 5 triangle" with side lengths 3, 4, and 5.
Slope-intercept form : y = mx + b
3) y + 4 = x
So, you need to move 4 to the other side, so that y is by itself.
Subtract 4 from both sides.
y = x - 4
~Hope I helped!~
