6. if z = -3, then what is z2 – 2 + 1?
7. if y= -5, then what is 3y2 + 7y -4?
8. if a = 6 and b = -2, what is (a-b)/(a+b)?
9. if m = 4 and n = 3, what is (m2 - n2)/ (m2 + n2)?
10. if x=4 and y= 12, what is 1/x + 1/y

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

f(x) = y

f(-3) = -5

step-by-step explanation:

answer: your gay

step-by-step explanation:

you dont know math