Answer:
x =1/12(1-√(97) )
Step-by-step explanation:
4x=-3y+17 becomes 4x+3y=17
4x+3y=17
3x-4y=-6
alrighty
elimination
muliply first equation by 4 and 2nd by 3 and add them
16x+12y=68
9x-12y=-18
add them
25x+0y=50
25x=50
idivide both sides by 25
x=2
sub back
3x-4y=-6
3(2)-4y=-6
6-4y=-6
-4y=-12
y=3
(x,y)
(2,3)
Answer:
Proportional
Step-by-step explanation:
If she burns 15 per minute, the she will burn 30 in 2 min and 45 in 3 min, etc. Therefore it is proportional.
Answer:
No, because it does not have a constant rate of change
Step-by-step explanation:
look at the changes of the y values when going from one x value to the next.
x always changes by 1.
but y changes by +7, +5, +6.
the change rate is the ratio y/x.
as we can see, this changes in each interval.
so, the change rate is not constant.
but this is the deciding property of a linear function. as the name says, a linear function is a straight line. it has the same incline (= changes rate) everywhere on the line. otherwise it is not a straight line.
