P= -4b^2 +6b - 9 Q = 7b^2 – 2b – 5
P-Q =
Your answer should be a polynomial in standard form.

Step-by-step explanation:

-4b^2+6b-9-(7b^2-2b-5)=

-4b^2+6b-5-7b^2+2b+5=

-11b^2+8b-4

step-by-step explanation:

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17