Point-slope form is y - y1 = m(x - x1). If you apply that point and the slope to the formula (hence the name point-slope), you'd get y - 10 = -5(x + 8).
Hope this helps! :)
REVISE: I accidently put y instead of x in the -5(x + 8) part. It's fixed now.
A triangle where all three sides are the same
It is a scalene triangle. All sides are of different lengths.
Negative times negative is positive.
Positive times positive is positive.
Negative times positive is negative.
(-3.8)(-5.7) gives you a positive product then it is + times (-1.4) which gives you a negative product.
