Find the value of x. A.75 B.25 C.35 D.105
1 answer:
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Answer:
C
Step-by-step explanation:
The domain of this function is , as it is shown in the graph that
is only within this interval. The range of this function is
, as the smallest value of
is -4 and the largest value of
is 4, and
takes every possible values between them.
Answer:
2y = x + 2
Step-by-step explanation:
Looking at the graph, we can see from one point to the next (from right to left), the x-value rises by 2 and the y-value by 1;
From this we can work out the gradient between two points using the formula, i.e. the change/difference in y divided by the change/difference in x:
Joining the points gives a straight line, which means a constant gradient of ¹/₂
Use the line equation formula to get the function:
y - y₁ = m(x - x₁)
m = ¹/₂
x₁ = 0
y₁ = 1
y - 1 = ¹/₂.(x - 0)
y - 1 = ¹/₂.x
2y - 2 = x
2y = x + 2