Find the constants m and b in the linear function f (x) = mx + b so that f (3) = 1 and the straight line representd by f has slope - 7.

Question

Mathematics

Finn Pierce

21 September, 09:38

Find the constants m and b in the linear function f (x) = mx + b so that f (3) = 1 and the straight line representd by f has slope - 7.

+3

Answers (2)

Know the Answer?

Ahmed Anderson · Answer 1

M = slope so here m = - 7

when x is 3, f (3) = 1

so

1 = - 7 (3) + b

b = 22

m = - 7 and b = 22

Karissa Morton · Answer 2

Use the model y=f (x) = mx+b.

Fact #1: x=3, y=1 = > 1 = m (3) + b

Fact #2: m=-7

Substitute - 7 for m in the first equation. Find b.

Then m=-7, and b=?