kasonlowery

25.10.2019 • 

Mathematics

Situation 1:

f
(
x
)
=
14
x
−
12
f(x)=14x−12
g
(
x
)
=
7
x
2
−
3
x
−
11
g(x)=7x2−3x−11

mark is asked to find
(
g
−
f
)
(
x
)
.
(g−f)(x).
this is his work:

14
x
−
12
−
7
x
2
−
3
x
−
11
−
7
x
2
+
11
x
+
23
14x−12−7x2−3x−11−7x2+11x+23

find mark's mistakes (there are more than one). explain what he did wrong and how to fix it.

Ответ:

xdimplesjoon

04.12.2021

Mathematics

---

First find the slope
(0+2)/(1-2) = 2/-1 = -2
Y = mx + b
Y = -2x + b
Plot in any point
-2 = -2(2) + b, b = 2
Solution: y = -2x + 2

---

0,0(0 оценок)