4 + .75m =10 i am not a math expert but i hope this helps
30.63 for 3 sets of pencils......that means each set cost (30.63 / 3) =
10.21....so the change in his account for 1 set of pencils is -$ 10.21 <=
M=(y2-y1)/(x2-x1) <em>(Multiplied terms on both sides of equation by (x2-x1).)</em>
m(x2-x1)=y2-y1 <em>(Added y1 to both sides of equation, ultimately isolating y2.)</em>
y2=m(x2-x1)+y1
Just multiply my friend. The answer is 196
Y=x+12
(-4,8)
(10,22)
y=4x
(5,20)
(-4,-16)
(0,0)
