Question

Jika diketahui h(x) =ax+b,h(-1)=-5, dan h(2)=4 maka tentukan
a.rumus fungsi
b.nilai dari (h-7)
c.nilai dari h(9)



TOLONG BANTU JAWAB YA. TERIMAKASIH

Answer 1

Verified answer

H(x) = ax + b
h(-1) = -5
a (-1) + b = -5
b - a = -5 .........(× -1)
a - b = 5.............. Persamaan #1

h(2) = 4
a (2) + b = 4
2a + b = 4 ...........Persamaan #2

a    - b = 5
2a + b = 4  +
3a + 0 = 9
3a = 9
a = 9 / 3
a = 3

2a + b = 4
2 (3) + b = 4
6 + b = 4
b = 4 - 6
b = -2

a. Rumus Persamaan
h(x) = ax + b
h(x) = 3x - 2

b. h(-7) = ?
h(x) = 3x - 2
h(-7) = 3 (-7) - 2
h(-7) = -21 - 2
h(-7) = -23

c. h(9) = ?
h(x) = 3x - 2
h(9) = 3 (9) - 2
h(9) = 27 - 2
h(9) = 25