Obviously, 0.8, all you do is move over the decimal.
y = mx + b
5 = 12(-3) + b
5 = -36 + b
b = 41
y = -3x + 41
If they are parallel then the coefficients of x and y will remain the same. Only the constant will change.
2x + 3y = ?
2(-2) +3(3) = -4 + 9 = 5 so ? is 5
ANSWER: 2x + 3y = 5
D. X=3cm
Since the triangles are similar, just set up a proportion to solve for x.
4/8=x/6. Then just cross multiply and solve from there.
