Question

Tony has 6 dollars in change in his car. Every time he drives to visit his grandma, he pays $1.25 in tolls. Which graph represents the change Tony has in his car?

Answer 1

If x = the number of times he drives to his grandma

y = -1.25x + 6

Answer 2

Oh really...thanks I have no idea what to do.

Answer 3

Can I ask one more?

Answer 4

sure

Answer 5

Which function below has the smallest slope?
f(x)
f(x) = 2x - 3

g(x)
y=2x-5

h(x)
x h(x)
1 3
-1 7
3 11

and the options are:
f(x)

g(x)

h(x)

The functions all have the same slope

Answer 6

@greenleaf800073 ?

Answer 7

It's function h, look at the number before the 'x', in this case for functions f and g, it's 2

to solve for slope, do

(y2-y1)/(x2-x1)
y2 is the y coord in the second point, y1 is the y coord in the first point
x2 is the x coord in the second point, x1 is the x coord in the firs tpoint
In this case, we'll take the points (1, 3) and (-1, 7)

(7-3)/(-1-1) = 4/-2 = -2

If you count negative numbers as smaller than positive numbers, then function h has the smallest slope as its slope is -2

Answer 8

there is an easier way u can but the equation on this form y=mx+c
and the slope is m

Answer 9

No, that's how you do it, and y=mx+c is the equation format

Answer 10

Oh I see but what if its asking for which function has the lowest y-intercept?
it gives:
f(x)
y=-(1/2)x+2
g(x)
Al had two dozen donuts when he walked into the office, but every cubicle he passed, he lost 2 donuts.
h(x)
h(x) = 6x + 1

Answer 11

It would be h(x), you see that number after the + sign? that's the y intercept

for g(x), he started off with 24 donuts, that 24 donuts would be c in the equation y=mx+c

Answer 12

Oh ok Thanks ^.^

Answer 13

What would be the equation for this:
Lance gains 1 level each time he plays his favorite video game. He started at level 10.

Answer 14

It would be y = x+10

x = number of times he plays
y = lvl