Question

Find y when x = 1, if y = 3 when x = 2. a.  y = x; y =  b.  y = –x; y = – c.  y = x; y =  d.  y = x; y = 1

Answer 1

y = 1.5 or 3/2

Step-by-step explanation

We are given that:

y = 3 when x = 2

From the question, we know that y and x have a proportional relationship.

This means that y and x change at the same rate:

=> y = kx

where k = constant of proportionality

y is 3 when x is 2:

3 = k * 2

=> k = 3/2 = 1.5

Therefore, when x = 1:

y = 1.5 * 1

y = 1.5 or 3/2