Home / Assignment Help / Match the rational expressions with their rewritten form x2+4x-7/x-1, 2×2-3x+7/x-1, 2×2-x-7/x-1, x2-2x+7/x-1? A (x+5 ) + -2/x-1 B (x-1) + 6/x-1 C (2x+1) + -6/x-1 D (2x-1) + 6/x-1

Match the rational expressions with their rewritten form x2+4x-7/x-1, 2×2-3x+7/x-1, 2×2-x-7/x-1, x2-2x+7/x-1? A (x+5 ) + -2/x-1 B (x-1) + 6/x-1 C (2x+1) + -6/x-1 D (2x-1) + 6/x-1

Answer:

An expression can be used to find the value of y when x is 2 is,

y=8x ; Value of y = 16 when x = 2

Step-by-step explanation:

Direct variation states:

If y varies directly as x

y propto x

then the equation is in the form of:

y = kx where, k is the constant of variation.

As per the statement:

If y varies directly as x, and y is 48 when x is 6.

y = kx

y = 48 when x = 6

Substitute the given values in [1] and solve for k we have;

48= 6k

Divide both sides by 6 we have;

8 = k

or

k = 8

Then, an equation we have;

y =8x             ….[2]

We have to find value of y when x is 2.

Substitute the value of x = 2 in [2] we have;

y = 8(2) = 16

Therefore, an expression can be used to find the value of y when x is 2 is,

y=8x  and Value of y = 16 when x = 2

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