rate of change= slope
a) y=7x
Slope intercept form:
y=mx+b
where, m= slope
m=7
b) slope= y variation / x variation
m= 12/4 = 3
c) slope=
[tex]m=\frac{x2-x1}{y2-y1}[/tex]
Replace with 2 points:
[tex]m=\text{ }\frac{8-0}{2-0}=\frac{8}{2}=4[/tex]
m=4
d) by looking at the graph we can see that the line goes up 6 units(y) for every increase of 1 in the value of x .
m= 6/1 = 6
So, the rates of change are:
a)7
b)3
c)4
d)6
Biggest rate of chane is A. (7)
