(b) In each part, from the graph find the value of
y, when (i)x = 2 (ii) x = 3 (iii) x = 0
Answers
Answer:
(i) When x = 2, then A = 4
(ii) When x = 3, then A = 9
(iii) When x = 0 then A = 0.
Step-by-step explanation:
Step : 1 A=
giving some values to x, we get corresponding values of y or A
If x = 1, then y or A = =1
If x = 2, then y or A = =4
If x = 0, then or A = =0
x 1 2 0
A 1 4 0
Step : 2 Now plot the point (1, 1), (2, 4), (0, 0) on the graph, and join them to get the graph of A = as shown
(b) From the graph we see that
(i) When x = 2, then A = 4
(ii) When x = 3, then A = 9
(iii) When x = 4 then A = 16.
Step : 3 This is due to the fact that the y-intercept occurs when the x value is 0. Y = B when x = 0, since mx = 0 at this point. We set y = 0 and solve the equation for x to determine the x-intercept. Put the value of x into the equation to discover the value of y given the value of x. Think about the formula y = 2x + 6. What does y equal when x equals 5? In the equation, replace the value for x.
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