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.

Asystem of equations is given below.y= 1/2x-3 and y=-1/2 x-3which of the following statements best describes the two lines? a.they have the same slope but different y-intercepts, so they have no solution.b.they have the same slope but different y-intercepts, so they have one solution.c.they have different slopes but the same y-intercept, so they have no solution.d.they have different slopes but the same y-intercept, so they have one solution.html