Answer:
25 miles per gallon
Step-by-step explanation:
Miles per gallon is the same as: 
. The graph shows that when 2 gallons of gasoline are used, 50 miles are driven. So you would do 
, which is 25.
Hope it helps!
10 to the power of 6, I believe.
Answer:
y = 2x + 2
Step-by-step explanation:
for each rise of 4 in y
there is a run of 2 in x
m = rise/run
m = 4/2
m = 2
when x = 0, y = 2
therefor the y-intercept, b = 2
y = mx + b
y = 2x + 2
Answer: C: on the science test because the y-intercept is greater
Step-by-step explanation: I got the question right on edge.
The gradient of the function is constant s the independent variable (x) varies The graph passes through the origin. That is to say when x = 0, y = 0. Clearly A and D pass through the origin, and the gradient is constant because they are linear functions, so they are direct variations. The graph of 1/x does not have a constant gradient, so any stretch of this graph (to y = k/x for some constant k) will similarly not be direct variation. Indeed there is a special name for this function, inverse proportion/variation. It appears both B and C are inverse proportion, however if I interpret B as y = (2/5)x instead, it is actually linear. I believe the answer is C. Hope I helped!
