1) hasil dri √18 kali √12=..... 2)fungsi f:x -->ax+3.jika f(-4)=-5,maka nilai a =... 3) persamaan gariss yg mell titik(3,-2)&tegak lurus garis y=3x+4 adlh...

1) √18 × √12 = 3√2 × 2√3 = 6√6

2) f(x) = ax + 3
f(-4) = -4a + 3
-5 = -4a + 3
4a = 5 + 3
4a = 8
a = 8/ 4
a = 2

3) y = 3x + 4
Gradien m = 3
tegak lurus m1 . m2 = -1 mak gradiennya m. = -⅓

(3, -2) m = -⅓
y + 2 = -⅓ (x - 3)
-3 (y + 2) = x - 3
-3y - 6 = x - 3
x + 3y + 3 = 0