(2,-6).(1,-3)
y=1/2-4-2
x=2y−1
−4y−4x=−8
3x−2y=−7
y=4x+16
10( $\sqrt{\Box}$3-1
simplify 6f+2-4f-8
9y/-8y
7623÷77
sec^2 x tany dx - sec^2 tan x dy = 0
Missing number
1 39 40 ? 19