Question

Draw rhe graph of the following equation y=3x . From your graph find the value of y when i. x=2 ii. x=-2 .​

Answer 1

Answer:

Substitute different values of x in y=3x and get corresponding y coordinates.

Such as (0,0),(1,3),(2,6),(−1,−3),(−2,−6)

Now, when x=−2 then y=−6 .

Step-by-step explanation:

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Answer 2

Answer:

i) it is given

y=3(1)

substituting x = 1 in the given equation

y=3

substituting x=-1 in the given equation

y=3(-1)

so we get

y=-3

X1-1

y3-3

now draw graph using the points A(1,3) and B(-1,-3)

join the Points AB through a line and find the value of y

Based on the graph

i) consider x=2 on X-axis as point M

now the line joining AB and point on Y-axis gives the value of y

therefore, when x=2 the value of y=6

substituting x=2 in the given equation

y=3(2)

so we get

y=6

x12

y36

now draw a graph using the points A(1,3) and (2,6)

join the points PQ through a line and find the value of y

based on the graph

consider x=2 in X-axis as point P

now the joining AB and a point on the Y-axis gives the value of y

therefore, x=-2 and y=-6

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