Graph by giving concrete values to x and then solve for f(x)
Simplify the formula of f(x)
f(x)=(-1/2)*x -7
f(x)=(-0.5*x) - 7 e.g. x = 1
then f(x) = (-0.5*1)-7 = -7.5
Put into table (minimum of 5 values of x)
f(x)=(-0.5*X/7) Where X
-6 -2
-6.5
-1
-7
0
-7.5 1
-8 2
Graph this into a cartesian plane (x,y) plane you get the attached image.
we have p1(-2,-6), p2(-1,-6.5), p3(0,-7),p4(1,-7,5),p5(2,-8)
